Description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.


Older, EOL versions may also be affected.


Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
Published: 2023-11-28
Score: 7.5 High
EPSS: 57.9% High
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3707-1 tomcat9 security update
Debian DSA Debian DSA DSA-5665-1 tomcat10 security update
Debian DSA Debian DSA DSA-5667-1 tomcat9 security update
Github GHSA Github GHSA GHSA-fccv-jmmp-qg76 Apache Tomcat Improper Input Validation vulnerability
Ubuntu USN Ubuntu USN USN-7032-1 Tomcat vulnerability
History

Thu, 07 Aug 2025 11:15:00 +0000

Type Values Removed Values Added
Description Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue. Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

Thu, 13 Feb 2025 17:30:00 +0000

Type Values Removed Values Added
Description Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue. Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

Subscriptions

Apache Tomcat
Redhat Enterprise Linux Jboss Enterprise Web Server Jboss Fuse Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2025-10-29T12:00:24.622Z

Reserved: 2023-10-23T08:14:01.046Z

Link: CVE-2023-46589

cve-icon Vulnrichment

Updated: 2024-08-02T20:45:42.297Z

cve-icon NVD

Status : Modified

Published: 2023-11-28T16:15:06.943

Modified: 2025-08-07T11:15:28.180

Link: CVE-2023-46589

cve-icon Redhat

Severity : Important

Publid Date: 2023-11-28T00:00:00Z

Links: CVE-2023-46589 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses