CVE-2026-34486

HighPublished

Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor

Published: Apr 9, 2026
Updated: Sep 21, 2026
Assigning CNA: apache
Evidence observed: Aug 4, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS probability estimate

6.6%

Low · next 30 days

Percentile: 93.7%
Model date: Oct 17, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

Sources

Repository evidence: Files: 2 · Repositories: 2

1 Template1 Lab

Tomcat Tribes EncryptInterceptor Bypass Remote Code ExecutionLab
tomcat/CVE-2026-34486
Tomcat Tribes EncryptInterceptor Bypass Remote Code Execution (CVE-2026-34486)
Vulhub vulnerability labs
ResearchEvidence observed: Sep 25, 2026Revision: 9b90d4276f84Related tool
Declared conditions
- lab image version: vulhub/tomcat:9.0.116(tomcat/CVE-2026-34486/docker-compose.yml:services.tomcat.image)
Apache Tomcat Tribes EncryptInterceptor Bypass - Remote Code ExecutionTemplate
http/cves/2026/CVE-2026-34486.yaml
Nuclei Templates
DetectionEvidence observed: Sep 26, 2026Revision: 17f5725dc10cRelated tool
Declared conditions
- verification: word($.matchers[*].type)
- oob: interactsh_reference($.template_text)

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