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Back to active CVEs
High · CVSS 7.5CVE-2023-46589GHSA-FCCV-JMMP-QG76

Apache Tomcat Improper Input Validation vulnerability

Answer in brief

CVE-2023-46589 records a High severity (CVSS 7.5) vulnerability in Apache Tomcat Improper Input Validation vulnerability. The current sources do not mark it as known exploited. The current feed maps org.apache.tomcat.embed:tomcat-embed-core (maven), org.apache.tomcat.embed:tomcat-embed-core (maven), org.apache.tomcat.embed:tomcat-embed-core (maven), org.apache.tomcat.embed:tomcat-embed-core (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 28, 2023Updated Oct 2, 2026Source checked Oct 2, 2026First seen by HOL Oct 2, 2026Material review Oct 2, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
9 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps org.apache.tomcat.embed:tomcat-embed-core (maven), org.apache.tomcat.embed:tomcat-embed-core (maven), org.apache.tomcat.embed:tomcat-embed-core (maven), org.apache.tomcat.embed:tomcat-embed-core (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
org.apache.tomcat.embed:tomcat-embed-coremaven>=11.0.0-M1,<11.0.0-M1111.0.0-M11
org.apache.tomcat.embed:tomcat-embed-coremaven>=10.1.0-M1,<10.1.1610.1.16
org.apache.tomcat.embed:tomcat-embed-coremaven>=9.0.0-M1,<9.0.839.0.83
org.apache.tomcat.embed:tomcat-embed-coremaven>=8.5.0,<8.5.968.5.96
org.apache.tomcat:tomcat-catalinamaven>=11.0.0-M1,<11.0.0-M1111.0.0-M11
org.apache.tomcat:tomcat-catalinamaven>=10.1.0-M1,<10.1.1610.1.16
org.apache.tomcat:tomcat-catalinamaven>=9.0.0-M1,<9.0.839.0.83
org.apache.tomcat:tomcat-catalinamaven>=8.5.0,<8.5.968.5.96
org.apache.tomcat:tomcat-coyotemaven>=11.0.0-M1,<11.0.0-M1111.0.0-M11

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for org.apache.tomcat.embed:tomcat-embed-core, org.apache.tomcat.embed:tomcat-embed-core, org.apache.tomcat.embed:tomcat-embed-core.
  2. 2Review the reported fix. Update org.apache.tomcat.embed:tomcat-embed-core to 11.0.0-M11; org.apache.tomcat.embed:tomcat-embed-core to 10.1.16; org.apache.tomcat.embed:tomcat-embed-core to 9.0.83; org.apache.tomcat.embed:tomcat-embed-core to 8.5.96; org.apache.tomcat:tomcat-catalina to 11.0.0-M11; org.apache.tomcat:tomcat-catalina to 10.1.16; org.apache.tomcat:tomcat-catalina to 9.0.83; org.apache.tomcat:tomcat-catalina to 8.5.96; org.apache.tomcat:tomcat-coyote to 11.0.0-M11 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 28, 2023

    Evidence: source:ghsa:source_dates:source-dates:record

  2. Source modified

    Oct 2, 2026

    Evidence: source:ghsa:source_dates:source-dates:record

  3. First seen by HOL

    Oct 2, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencelists.apache.org
  • Source referencelists.debian.org
  • NVD vulnerability recordnvd.nist.gov
  • Source referencesecurity.netapp.com
  • Source referencetomcat.apache.org
  • Source referencetomcat.apache.org
  • Source referencetomcat.apache.org
  • Source referencetomcat.apache.org
  • Source referenceopenwall.com
  • Source referenceopenwall.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Copernik XML Factory (stock JDK provider) has Improper restriction of XInclude resource resolutionSame maven ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-20, CWE-444
Source
GitHub Security Advisories
Source checked
Oct 2, 2026
References
15 linked sources
Open source record