by Kastro
Paper/Archive/CVE-2026-65182

CVE-2026-65182

Apache Software Foundation Apache Tomcat — Apache Tomcat: Bypass longest prefix security constraint

EPSS 0.7%CVSS 9.1
critical.is priorityof 100
38
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 51.3.513 × 2010.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint bypass if a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.25, 10.1.58, 9.0.121, which fixes the issue.

Affected

ProductAffectedFixed inSource
Apache Tomcat11.0.0-M1 – 11.0.24–CNA
Apache Tomcat10.1.0-M1 – 10.1.57–CNA
Apache Tomcat9.0.0.M1 – 9.0.120–CNA
Apache Tomcat8.5.0 – 8.5.100–CNA
Apache Tomcat7.0.0 – 7.0.109–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/joosxvzc9b49ttj8lj0jw9mqt0ml767mrefopenwall.com/lists/oss-security/2026/08/26/1