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146 vulnerabilities by zimbra
CVE-2026-93647 (GCVE-0-2026-93647)
Vulnerability from nvd – Published: 2026-09-25 13:58 – Updated: 2026-09-28 12:39
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Crafted Calendar COUNTER Message From Address
Summary
An unauthenticated calendar sender can place active markup in a COUNTER message's RFC From address. Selecting the message in Zimbra Classic triggers stored XSS, allowing the attacker to access mailbox data and act as the victim.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-26 03:55 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93643 (GCVE-0-2026-93643)
Vulnerability from nvd – Published: 2026-09-25 13:57 – Updated: 2026-09-26 03:55
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request
Summary
When OnlyOffice/Document Editing is available, an unauthenticated remote attacker with access to an existing supported public Briefcase document can abuse unsigned save fields to perform path-traversal writes and execute commands as zimbra.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93642 (GCVE-0-2026-93642)
Vulnerability from nvd – Published: 2026-09-25 13:56 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Modern Web Client Stored Cross-Site Scripting via Forged Share Invitation
Summary
An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Modern recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:10 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:52
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CVE-2026-93641 (GCVE-0-2026-93641)
Vulnerability from nvd – Published: 2026-09-25 13:55 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Forged Share Invitation
Summary
An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Classic recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:11 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:52
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CVE-2026-73576 (GCVE-0-2026-73576)
Vulnerability from nvd – Published: 2026-08-13 15:26 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in insufficient entropy. An attacker who obtains a JWT signed with the generated secret may be able to recover the JWT signing secret through offline brute-force, potentially enabling JWT forgery.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-1241 - Use of Predictable Algorithm in Random Number Generator
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73575 (GCVE-0-2026-73575)
Vulnerability from nvd – Published: 2026-08-13 15:24 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
1 product
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|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73574 (GCVE-0-2026-73574)
Vulnerability from nvd – Published: 2026-08-13 15:23 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classic Web Client due to improper validation of the fu request parameter. An unauthenticated attacker can exploit this vulnerability by supplying a crafted path, potentially allowing unauthorized disclosure of protected files, such as WEB-INF/web.xml, within the web application directory. This occurs in the Forward servlet.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
1 product
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|---|---|---|---|
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Affected:
0 , < 10.1.17
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CVE-2026-73573 (GCVE-0-2026-73573)
Vulnerability from nvd – Published: 2026-08-13 15:22 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-24 - Path Traversal: '../filedir'
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73572 (GCVE-0-2026-73572)
Vulnerability from nvd – Published: 2026-08-13 15:21 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73571 (GCVE-0-2026-73571)
Vulnerability from nvd – Published: 2026-08-13 15:20 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:51 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
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CVE-2026-73570 (GCVE-0-2026-73570)
Vulnerability from nvd – Published: 2026-08-13 15:19 – Updated: 2026-08-24 12:17Summary
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
Severity
8.9 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-22 03:55 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | |
| https://wiki.zimbra.com/wiki/Security_Center | |
| https://moje.cert.pl/komunikaty/2026/145/aktywnie… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.20
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cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2025-66376 (GCVE-0-2025-66376)
Vulnerability from nvd – Published: 2026-01-05 00:00 – Updated: 2026-03-19 03:55Summary
Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message.
Severity
7.2 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 00:00 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
10.0 , < 10.0.18
(custom)
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CVE-2025-67809 (GCVE-0-2025-67809)
Vulnerability from nvd – Published: 2025-12-15 00:00 – Updated: 2025-12-15 20:17
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A hardcoded Flickr API key and secret are present in the publicly accessible Flickr Zimlet used by Zimbra Collaboration. Because these credentials are embedded directly in the Zimlet, any unauthorized party could retrieve them and misuse the Flickr integration. An attacker with access to the exposed credentials could impersonate the legitimate application and initiate valid Flickr OAuth flows. If a user is tricked into approving such a request, the attacker could gain access to the user s Flickr data. The hardcoded credentials have since been removed from the Zimlet code, and the associated key has been revoked.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-15 20:15 UTC
CWE
- n/a
- CWE-798 - Use of Hard-coded Credentials
Assigner
References
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CVE-2025-62763 (GCVE-0-2025-62763)
Vulnerability from nvd – Published: 2025-10-21 00:00 – Updated: 2025-12-08 15:40
VLAI
EPSS
VEX
Summary
Zimbra Collaboration (ZCS) before 10.1.12 allows SSRF because of the configuration of the chat proxy.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-21 18:32 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.12
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2024-45515 (GCVE-0-2024-45515)
Vulnerability from nvd – Published: 2025-07-30 00:00 – Updated: 2025-07-30 18:52
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) through 10.1. A Cross-Site Scripting (XSS) vulnerability exists in Zimbra webmail due to insufficient validation of the content type metadata when importing files into the briefcase. Attackers can exploit this issue by crafting a file with manipulated metadata, allowing them to bypass content type checks and execute arbitrary JavaScript within the victim's session.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-30 18:51 UTC
CWE
- n/a
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
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CVE-2026-93647 (GCVE-0-2026-93647)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:58 – Updated: 2026-09-28 12:39
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Crafted Calendar COUNTER Message From Address
Summary
An unauthenticated calendar sender can place active markup in a COUNTER message's RFC From address. Selecting the message in Zimbra Classic triggers stored XSS, allowing the attacker to access mailbox data and act as the victim.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-26 03:55 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93643 (GCVE-0-2026-93643)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:57 – Updated: 2026-09-26 03:55
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite OnlyOffice Integration Path Traversal Leading to Remote Code Execution via Unauthenticated /downloadas Request
Summary
When OnlyOffice/Document Editing is available, an unauthenticated remote attacker with access to an existing supported public Briefcase document can abuse unsigned save fields to perform path-traversal writes and execute commands as zimbra.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:53
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CVE-2026-93642 (GCVE-0-2026-93642)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:56 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Modern Web Client Stored Cross-Site Scripting via Forged Share Invitation
Summary
An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Modern recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:10 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:52
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CVE-2026-93641 (GCVE-0-2026-93641)
Vulnerability from cvelistv5 – Published: 2026-09-25 13:55 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Forged Share Invitation
Summary
An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Classic recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:11 UTC
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Zimbra Collaboration Suite (ZCS) |
Affected:
0 , < 10.1.21
(semver)
|
Date Public
2026-09-25 13:52
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CVE-2026-73576 (GCVE-0-2026-73576)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:26 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in insufficient entropy. An attacker who obtains a JWT signed with the generated secret may be able to recover the JWT signing secret through offline brute-force, potentially enabling JWT forgery.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-1241 - Use of Predictable Algorithm in Random Number Generator
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73575 (GCVE-0-2026-73575)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:24 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
1 product
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|---|---|---|---|
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Affected:
0 , < 10.1.17
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CVE-2026-73574 (GCVE-0-2026-73574)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:23 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classic Web Client due to improper validation of the fu request parameter. An unauthenticated attacker can exploit this vulnerability by supplying a crafted path, potentially allowing unauthorized disclosure of protected files, such as WEB-INF/web.xml, within the web application directory. This occurs in the Forward servlet.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73573 (GCVE-0-2026-73573)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:22 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-24 - Path Traversal: '../filedir'
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73572 (GCVE-0-2026-73572)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:21 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
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CVE-2026-73571 (GCVE-0-2026-73571)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:20 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:51 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73570 (GCVE-0-2026-73570)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:19 – Updated: 2026-08-24 12:17Summary
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
Severity
8.9 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-22 03:55 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | |
| https://wiki.zimbra.com/wiki/Security_Center | |
| https://moje.cert.pl/komunikaty/2026/145/aktywnie… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
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| Zimbra | Collaboration |
Affected:
0 , < 10.1.20
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CVE-2025-66376 (GCVE-0-2025-66376)
Vulnerability from cvelistv5 – Published: 2026-01-05 00:00 – Updated: 2026-03-19 03:55Summary
Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message.
Severity
7.2 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 00:00 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
10.0 , < 10.0.18
(custom)
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CVE-2025-67809 (GCVE-0-2025-67809)
Vulnerability from cvelistv5 – Published: 2025-12-15 00:00 – Updated: 2025-12-15 20:17
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A hardcoded Flickr API key and secret are present in the publicly accessible Flickr Zimlet used by Zimbra Collaboration. Because these credentials are embedded directly in the Zimlet, any unauthorized party could retrieve them and misuse the Flickr integration. An attacker with access to the exposed credentials could impersonate the legitimate application and initiate valid Flickr OAuth flows. If a user is tricked into approving such a request, the attacker could gain access to the user s Flickr data. The hardcoded credentials have since been removed from the Zimlet code, and the associated key has been revoked.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-15 20:15 UTC
CWE
- n/a
- CWE-798 - Use of Hard-coded Credentials
Assigner
References
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CVE-2025-62763 (GCVE-0-2025-62763)
Vulnerability from cvelistv5 – Published: 2025-10-21 00:00 – Updated: 2025-12-08 15:40
VLAI
EPSS
VEX
Summary
Zimbra Collaboration (ZCS) before 10.1.12 allows SSRF because of the configuration of the chat proxy.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-21 18:32 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.12
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2024-45515 (GCVE-0-2024-45515)
Vulnerability from cvelistv5 – Published: 2025-07-30 00:00 – Updated: 2025-07-30 18:52
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) through 10.1. A Cross-Site Scripting (XSS) vulnerability exists in Zimbra webmail due to insufficient validation of the content type metadata when importing files into the briefcase. Attackers can exploit this issue by crafting a file with manipulated metadata, allowing them to bypass content type checks and execute arbitrary JavaScript within the victim's session.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-30 18:51 UTC
CWE
- n/a
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
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