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CVE-2026-80353high8.1

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

Impact

Apache Tomcat versions 9.0.47 through 9.0.122 have a time-of-check time-of-use (TOCTOU) vulnerability, allowing an unauthorized local user to access Unix Domain Sockets via the APR/Native connector. The issue was not fixed by the patch for CVE-2026-65183. Local access is required to exploit the weakness.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

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Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Apache Software Foundation · apache

Apache Tomcat

1 range
apache version evidence

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affected

9.0.47 → through 9.0.122

semver versions

unaffected

unknown

Other versions: unaffected

Original source description

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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

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Original records

CVE-2026-80353

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Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-367 ↗

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

apache

Related →
Contributing organizations · 2
apache

Assigning organization

2026-10-20
CISA-ADP

Additional data publisher

2026-10-29

What changed

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References

1 sources
lists.apache.org/thread.html/tr0q87qwvs80p9hc53tkwpzvnx0ywftr
vendor-advisoryapache