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Servers and applications

CVE-2026-66422

Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole(). This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.25 through 9.0.120. The following versions were EOL at the time the CVE was…

Severity
High 8.1
Published
25 Aug 2026
Last changed
27 Aug 2026
Added to UpHeron
21 Oct 2026
Fixed in
9.0.121, 10.1.58, 11.0.25
Sources
NVD

Affected software

SoftwareAffected versions
Apache TomcatServers and applications · cpe:a:apache:tomcat
  • From 7.0.97 up to 7.0.109
  • From 8.5.46 before 9.0.121
  • From 10.1.0 before 10.1.58
  • From 11.0.0 before 11.0.25

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-66422
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-66422