CVE-2026-80353

High

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.

SeverityHigh

CVSS8.1

Exploit probability—

Product

Apache Tomcat

PublishedOct 20, 2026

First seenOct 20, 2026

Weakness typeCWE-367CWE-367

How to fix

Vendor advisories

lists.apache.org/thread.html/tr0q87qwvs80p9hc53tkwpzvnx0ywftr

Affected products

Product	Affected versions	Fixed in
Apache Software Foundation Apache Tomcat	9.0.47 ≤ v ≤ 9.0.122	—

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