CVE-2024-42009 (GCVE-0-2024-42009)

Vulnerability from cvelistv5 – Published: 2024-08-05 00:00 – Updated: 2025-10-21 22:55
VLAI CISA ENISA Previdian
Summary
A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.
Severity
9.3 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-20 03:56 UTC
CWE
  • n/a
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 236f7cd7-67a0-4774-86c5-67b7145795e3

Vulnerability ID: CVE-2024-42009

Status: Confirmed

Status Updated: 2025-06-09 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2025-06-09
Asserted: 2025-06-09
Scope
Notes: RoundCube Webmail Cross-Site Scripting Vulnerability | Affected: Roundcube / Webmail | Description: RoundCube Webmail contains a cross-site scripting vulnerability. This vulnerability could allow a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2025-06-30 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 ; https://nvd.nist.gov/vuln/detail/CVE-2024-42009
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-79
Feed CISA Known Exploited Vulnerabilities Catalog
Product Webmail
Due Date 2025-06-30
Date Added 2025-06-09
Vendorproject Roundcube
Vulnerabilityname RoundCube Webmail Cross-Site Scripting Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
ENISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 4b291c14-6f61-46f5-bc4a-1f39d74c8ac4

Vulnerability ID: CVE-2024-42009

Status: Confirmed

Status Updated: 2026-04-27 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2026-04-27
Asserted: 2026-04-27
Scope
Notes: Affected: RoundCube / Webmail | Description: A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php. | Patched since: 2024/08/04 | Exploitation type: APT | Threat actors: UNC1151 | CWEs: CWE-79 | Origin source: CERT-PL | Notes: https://cert.pl/en/posts/2025/06/unc1151-campaign-roundcube/
Evidence

Type: Csirt Report

Signal: Successful Exploitation

Confidence: 75%

Source: enisa-cnw-kev

Details
Cwes CWE-79
Euvd EUVD-2024-39391
Notes https://cert.pl/en/posts/2025/06/unc1151-campaign-roundcube/
Catalog ENISA / EU CSIRTs Network (CNW) KEV JSON
Product Webmail
Datereported 2026/04/27
Originsource CERT-PL
Patchedsince 2024/08/04
Vendorproject RoundCube
Exploitationtype APT
Vulnerabilityname
Threatactorsexploiting UNC1151
References
Created: 2026-10-02 08:52 CEST | Updated: 2026-10-02 08:52 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 8eb304f4-8e13-4f56-b765-c4ace035bfd9

Vulnerability ID: CVE-2024-42009

Status: Confirmed

Status Updated: 2026-06-01 12:32 CEST

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a... | Affected: Roundcube / Roundcube Webmail | CVSS: 9.3 (CRITICAL) | EPSS: 0.82882 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a...
Cve Id CVE-2024-42009
Vendor Roundcube
Ghsa Id None
Product Roundcube Webmail
Added Date 2026-06-01T10:32:11.788Z
Cvss Score 9.3
Epss Score 0.82882
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99663
Used In Malware unknown
Vulnerability Id CVE-2024-42009
Ahead Of Cisa Kev 
{
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  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.