CVE-2026-34500
Apache Tomcat: CLIENT_CERT authentication does not fail as expected
6.5
MEDIUM
CVSS 3.1
EPSS 0.15%
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.
How to fix CVE-2026-34500
To remediate CVE-2026-34500, upgrade the affected package to a fixed version below.
- —upgrade to 9.0.117 or later
- —no fix listed
- —no fix listed
- —upgrade to 9.0.70-2 or later
- —upgrade to 9.0.117 or later
Is CVE-2026-34500 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- >= 9.0.92, < 9.0.117, >= 10.1.22, < 10.1.54, >= 11.0.0, < 11.0.21
- from 0
- from 0
- from 0, < 9.0.70-2
- >= 9.0.92, < 9.0.117
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |