UpHeron
All vulnerabilities

Servers and applications

CVE-2026-34500

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.

Severity
Medium 6.5
Published
9 Apr 2026
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
9.0.117, 10.1.54, 11.0.21
Sources
NVD

Affected software

SoftwareAffected versions
Apache TomcatServers and applications · cpe:a:apache:tomcat
  • From 11.0.1 before 11.0.21
  • Version 11.0.0-milestone26
  • Version 11.0.0-milestone25
  • Version 11.0.0-milestone24
All 16 release lines
  • From 9.0.92 before 9.0.117
  • From 10.1.22 before 10.1.54
  • Version 11.0.0-milestone14
  • Version 11.0.0-milestone15
  • Version 11.0.0-milestone16
  • Version 11.0.0-milestone17
  • Version 11.0.0-milestone18
  • Version 11.0.0-milestone19
  • Version 11.0.0-milestone20
  • Version 11.0.0-milestone21
  • Version 11.0.0-milestone22
  • Version 11.0.0-milestone23
  • Version 11.0.0-milestone24
  • Version 11.0.0-milestone25
  • Version 11.0.0-milestone26
  • From 11.0.1 before 11.0.21

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-34500
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-34500