Common Weakness Enumeration
CWE-93
AllowedImproper Neutralization of CRLF Sequences ('CRLF Injection')
Abstraction: Base · Status: Draft
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
431 vulnerabilities reference this CWE, most recent first.
CVE-2026-102938 (GCVE-0-2026-102938)
Vulnerability from cvelistv5 – Published: 2026-09-29 20:58 – Updated: 2026-09-30 19:53
VLAI
EPSS
VEX
Title
virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection
Summary
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write() writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg._read_values() parses the file with str.splitlines() and accepts the last value for duplicate keys. An attacker who influences --prompt, VIRTUALENV_PROMPT, or configuration input can insert a recognized line boundary and additional keys, including home, causing consumers to use an attacker-selected base interpreter or corrupted environment metadata. The security impact requires prompt input from outside the operator's trust boundary; directly supplied prompt content primarily corrupts the operator's own environment. This issue is fixed in version 21.7.11.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 19:53 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/pypa/virtualenv/security/advis… | x_refsource_CONFIRM |
| https://github.com/pypa/virtualenv/pull/3247 | x_refsource_MISC |
| https://github.com/pypa/virtualenv/commit/a30f995… | x_refsource_MISC |
| https://github.com/pypa/virtualenv/releases/tag/21.7.11 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| pypa | virtualenv |
Affected:
< 21.7.11
|
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CVE-2026-102145 (GCVE-0-2026-102145)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:08 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Core Server-Side Request Forgery through CRLF Injection
Summary
An authenticated administrator could cause the server to issue requests to, and interact with, internal network services that are not meant to be reachable through this interface. On its own this did not result in code execution.
Severity
6.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:25 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
Date Public
2026-09-30 00:00
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CVE-2026-102136 (GCVE-0-2026-102136)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:12 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Core Command Execution through Configuration Injection
Summary
In multi-node deployments, an attacker who had already obtained code execution on one appliance node could submit a value through an internal cluster interface that was written into monitoring configuration on another node without sufficient validation, potentially allowing OS commands to be executed there. Execution was limited to an unprivileged service account on that node.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:24 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
Date Public
2026-09-30 00:00
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CVE-2026-100717 (GCVE-0-2026-100717)
Vulnerability from cvelistv5 – Published: 2026-09-26 13:24 – Updated: 2026-09-30 17:07
VLAI
EPSS
VEX
Title
froxlor before 2.3.12 CRLF Injection via validateUrl userinfo
Summary
froxlor is a server administration panel. In versions 2.3.10 and earlier, Validate::validateUrl rejects carriage return and line feed characters only in the path, query and fragment components returned by parse_url, and never inspects the userinfo (user:pass@) components. This is an incomplete fix for GHSA-c3p2. An authenticated low-privilege customer with subdomain-create rights (no admin or change_serversettings privilege required) can supply a subdomain redirect URL that carries a CR/LF payload in the userinfo portion (e.g. http://user%0areturn 200 "pwned";%0a@evil.com/). The value passes validation, survives IDNA encoding, and is written verbatim into the generated nginx or Apache vhost configuration, allowing the attacker to break out of the emitted directive and inject arbitrary web-server configuration lines. froxlor regenerates and reloads the web-server configuration as root, so the injected directives take effect server-wide and can hijack responses or read local files. The issue is fixed in version 2.3.12.
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 17:07 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/froxlor/froxlor/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/froxlor-befo… | third-party-advisory |
Impacted products
Date Public
2026-09-06 00:00
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CVE-2026-94216 (GCVE-0-2026-94216)
Vulnerability from cvelistv5 – Published: 2026-09-21 12:45 – Updated: 2026-09-30 19:05
VLAI
EPSS
VEX
Title
ST Engineering iDirect Evolution/Velocity WebServer Evolution HTTP Request authorize response splitting
Summary
A vulnerability was determined in ST Engineering iDirect Evolution and Velocity WebServer Evolution. This vulnerability affects unknown code of the file /authorize of the component HTTP Request Handler. Executing a manipulation of the argument Success can lead to http response splitting. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The validated environment is an EOL X7 (or an un-modelled legacy Evolution 21.x), and current supported releases (X10, X11, Velocity 5.x+) have no validated evidence of impact.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 15:19 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/408071 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/408071/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-94216 | third-party-advisory |
| https://vuldb.com/submit/894247 | third-party-advisory |
| https://github.com/dxz0069/WAVLINK-WN530H4-Comman… | exploit |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ST Engineering iDirect | Evolution |
Affected:
n/a
cpe:2.3:a:st_engineering_idirect:evolution:*:*:*:*:*:*:*:* |
|
| ST Engineering iDirect | Velocity WebServer Evolution |
Affected:
n/a
cpe:2.3:a:st_engineering_idirect:velocity_webserver_evolution:*:*:*:*:*:*:*:* |
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CVE-2026-94057 (GCVE-0-2026-94057)
Vulnerability from cvelistv5 – Published: 2026-09-19 22:55 – Updated: 2026-09-22 15:59
VLAI
EPSS
VEX
Summary
Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 15:59 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
Impacted products
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CVE-2026-93576 (GCVE-0-2026-93576)
Vulnerability from cvelistv5 – Published: 2026-09-18 14:33 – Updated: 2026-09-25 08:29
VLAI
EPSS
VEX
Title
Io.netty/netty-codec-smtp: netty netty-codec-smtp — smtp command-name field is not crlf-validated (incomplete fix of cve-2025-59419)
Summary
A flaw was found in Netty netty-codec-smtp. The component does not properly validate Carriage Return (CR) and Line Feed (LF) characters in the SMTP command-name field. A remote attacker, if an application routes untrusted input into this field, can embed CR/LF characters to inject arbitrary SMTP commands. This can lead to SMTP command smuggling, allowing for unauthorized email relay or spoofing of sender/recipient addresses. While the impact is significant, the real-world exploitability is considered lower as applications typically do not place user-controlled data in the command-name field.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 14:58 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-93576 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2536968 | issue-trackingx_refsource_REDHAT |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 |
cpe:/a:redhat:camel_spring_boot:4
|
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7
|
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7
|
Date Public
2026-09-10 00:53
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CVE-2026-91841 (GCVE-0-2026-91841)
Vulnerability from cvelistv5 – Published: 2026-09-25 17:56 – Updated: 2026-09-28 12:43
VLAI
EPSS
VEX
Title
Networkmanager-vpnc: networkmanager-vpnc: incomplete fix for cve-2018-10900 allows root privilege escalation via ca-file path newline injection
Summary
A flaw was found in NetworkManager-vpnc, a VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by injecting a newline character into the CA-File path. This manipulation allows the user to execute arbitrary commands as the root user, leading to local privilege escalation.
Severity
7.8 (High)
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-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-91841 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2533651 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/Archive/NetworkManager-v… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GNOME | NetworkManager-vpnc |
Affected:
0 , < *
(semver)
|
Date Public
2026-09-15 09:55
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CVE-2026-91840 (GCVE-0-2026-91840)
Vulnerability from cvelistv5 – Published: 2026-09-25 17:56 – Updated: 2026-09-28 12:44
VLAI
EPSS
VEX
Title
Networkmanager-vpnc: networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username
Summary
A flaw was found in NetworkManager-vpnc. This vulnerability allows a local unprivileged user to escalate privileges to root. By injecting a newline character into the VPN username field, an attacker can manipulate the vpnc configuration to execute an arbitrary program with root privileges when the malicious VPN connection is activated.
Severity
7.8 (High)
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-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-91840 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2533642 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/Archive/NetworkManager-v… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GNOME | NetworkManager-vpnc |
Affected:
0 , < *
(semver)
|
Date Public
2026-09-15 09:50
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CVE-2026-91839 (GCVE-0-2026-91839)
Vulnerability from cvelistv5 – Published: 2026-09-25 17:56 – Updated: 2026-09-28 12:44
VLAI
EPSS
VEX
Title
Networkmanager-fortisslvpn: networkmanager-fortisslvpn: local privilege escalation to root via crlf injection in vpn profile credentials
Summary
A flaw was found in NetworkManager-fortisslvpn, the FortiSSLVPN plugin for NetworkManager. The nm-fortisslvpn-service improperly handles carriage-return/line-feed (CR/LF) characters in VPN connection profile credentials. A local unprivileged user can exploit this by crafting a malicious VPN profile to inject additional configuration directives. This can lead to arbitrary code execution with root privileges when the crafted VPN connection is activated.
Severity
7.8 (High)
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-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-91839 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2533640 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/Archive/NetworkManager-f… |
Impacted products
1 product
| Vendor | Product | Version | |
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| GNOME | NetworkManager-fortisslvpn |
Affected:
0 , < *
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|
Date Public
2026-09-15 09:45
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Mitigation
Implementation
Avoid using CRLF as a special sequence.
Mitigation
Implementation
Appropriately filter or quote CRLF sequences in user-controlled input.
CAPEC-15: Command Delimiters
An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
CAPEC-81: Web Server Logs Tampering
Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.