CVE-2025-61581: Apache Traffic Control has an Inefficient Regular Expression Complexity vulnerability

October 16, 2025

*** UNSUPPORTED WHEN ASSIGNED *** Inefficient Regular Expression Complexity vulnerability in Apache Traffic Control.

This issue affects Apache Traffic Control: all versions.

People with access to the management interface of the Traffic Router component could specify malicious patterns and cause unavailability.

As this project is retired, it is not planned to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.

NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

References

github.com/advisories/GHSA-9m49-p2j3-c6xm
github.com/apache/trafficcontrol
lists.apache.org/thread/mx2jxgnlop2f4vbqnvmrldh4pqmobxvp
nvd.nist.gov/vuln/detail/CVE-2025-61581

Code Behaviors & Features

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