CVE-2025-61581

** 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, we do not plan 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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-25)

CWE

CWE-1333

Published

2025-10-16

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• apache:traffic_control

Packages (OSV)

References

• https://lists.apache.org/thread/mx2jxgnlop2f4vbqnvmrldh4pqmobxvp
• http://www.openwall.com/lists/oss-security/2025/10/16/3

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