Time-of-check Time-of-use (TOCTOU) Race Condition Affecting org.apache.tomcat:tomcat-util package, versions [9.0.42, 9.0.121)[10.1.0-M1, 10.1.59)[11.0.0-M1, 11.0.25)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Aug 2026
- disclosed26 Aug 2026
- creditUnknown
Introduced: 26 Aug 2026
NewCVE-2026-65183 (opens in a new tab)How to fix?
Upgrade org.apache.tomcat:tomcat-util to version 9.0.121, 10.1.59, 11.0.25 or higher.
Overview
org.apache.tomcat:tomcat-util is a Common code shared by multiple Tomcat components.
Affected versions of this package are vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition due to a race condition in the setting of permissions for Unix domain sockets. An attacker can gain unauthorized access to the socket by exploiting the time gap between the permission check and the actual use.
Note: This issue was fixed in Apache Tomcat 10.1.58 but the release vote for the 10.1.58 release candidate did not pass. Therefore, although users must download 10.1.59 to obtain a version that includes a fix for this issue, version 10.1.58 is not included in the list of affected versions.