High7.5Apache Software Foundation

High [CVE-2026-29146] Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default

This high-severity Apache Software Foundation advisory covers CVE-2026-29146 affecting Apache Tomcat.

CVE-2026-29146 Published Apr 9, 2026Updated by vendor Aug 17, 2026

CVE-2026-29146

Affected products & platforms

Apache Software FoundationTomcat

Open vendor advisory

Android app · Google Play

Monitor future Apache Software Foundation CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.0.0-M1 through 10.1.52, from 9.0.13 through 9..115, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109.

Users are recommended to upgrade to version 11.0.19, 10.1.53 and 9.0.116, which fixes the issue.

Affected versions

Apache Tomcat 11.0.0-M1 through 11.0.18
Apache Tomcat 10.0.0-M1 through 10.1.52
Apache Tomcat 9.0.13 through 9.0.115
Apache Tomcat 8.5.38 through 8.5.100
Apache Tomcat 7.0.100 through 7.0.109

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Fixed versions

11.0.19
10.1.53
9.0.116

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 11.0.19, 10.1.53 and 9.0.116, which fixes the issue.

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Sources

Official and corroborating records used to build this advisory.

CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program
NVD discovery recordNVD
Independent discovery and scoring cross-reference. Vendor remediation guidance takes precedence. Discovered from the machine-readable feed https://services.nvd.nist.gov/rest/json/cves/2.0; this link opens the NVD record for CVE-2026-29146 instead of the raw feed document.
NIST National Vulnerability Database

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-29146NVD CVE.org MITRE

Official resources

Apache Tomcat security bulletins (per major version) (target: 11.0.19 / 10.1.53 / 9.0.116)
Official documentation
This advisory names 11.0.19 / 10.1.53 / 9.0.116 as the first fixed releases — official upgrade documentation for Apache Tomcat security bulletins (per major version).
ASF Security — reporting & CVE process
Official documentation
The Apache Software Foundation's official security page: how ASF CVEs are published and where each project's advisories live.
Apache project downloads (fixed releases)
Official documentation
Official ASF download tree — fetch the fixed release named in this advisory from the project's directory.

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.