CVE-2026-80353 PUBLISHED

Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for CVE-2026-65183 did not address APR connector

Assigner: apache
Reserved: 26.08.2026 Published: 20.10.2026 Updated: 20.10.2026

Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-65183 only addressed the NIO connector. It did not address the same issue in the APR/Native connector.

This issue affects Apache Tomcat: from 9.0.47 through 9.0.122.

Users are recommended to upgrade to version 9.0.123, which fixes the issue.

Product Status

Vendor Apache Software Foundation
Product Apache Tomcat
Versions Default: unaffected
  • affected from 9.0.47 to 9.0.122 (incl.)

Credits

  • h1ei1 finder

References

Problem Types

  • CWE-367 Time-of-check time-of-use (TOCTOU) race condition CWE