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VulnerabilityPublished

CVE-2026-29145: Apache Tomcat · Improper Authentication

Affects Apache TomcatSource CVE Database V5

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Not known to be exploited · CVSS 9.1 Critical · fixed in 9.0.116 : patch Apache Tomcat as a priority.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 53% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 9.0.116, 2.0.14, 1.3.7 +2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade org.apache.tomcat/tomcat to 9.0.116; org.apache.tomcat/tomcat-native to 2.0.14, 1.3.7, 1.2.40 or 1.1.35.

Affected software

ProductAffectedFixed in
Apache Software FoundationApache TomcatAffected
  • >=11.0.0-M1 <=11.0.18
  • >=10.1.0-M7 <=10.1.52
  • >=9.0.83 <=9.0.115
Fixed in–
Apache Software FoundationApache Tomcat NativeAffected
  • >=1.1.23 <=1.1.34
  • >=1.2.0 <=1.2.39
  • >=1.3.0 <=1.3.6
  • >=2.0.0 <=2.0.13
Fixed in–
Mavenorg.apache.tomcat/tomcatpkg:maven/org.apache.tomcat/tomcatOther threatsAffected
  • >=9.0.83 <9.0.116
Fixed in
  • 9.0.116
Mavenorg.apache.tomcat/tomcat-nativepkg:maven/org.apache.tomcat/tomcat-nativeOther threatsAffected
  • >=1.1.23 <1.1.35
  • >=1.2.0 <1.2.40
  • >=1.3.0 <1.3.7
  • >=2.0.0 <2.0.14
Fixed in
  • 1.1.35
  • 1.2.40
  • 1.3.7
  • 2.0.14

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrading to the fixed versions is recommended: Apache Tomcat 9.0.116, 10.1.53, or 11.0.20 and Apache Tomcat Native 1.3.7 or 2.0.14. These versions address the authentication failure issue. No other mitigation guidance is provided. Patch status is confirmed by the vendor advisory recommending these upgrades.

Description

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.

References

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