CVE-2026-18992: zhayujie CowAgent Self-Evolution Review Agent executor.py _select_tools authorization

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-06 · updated 2026-10-23
Weakness: CWE-285

Description

A vulnerability was detected in zhayujie CowAgent up to 2.1.1. This vulnerability affects the function _select_tools of the file agent/evolution/executor.py of the component Self-Evolution Review Agent. Performing a manipulation results in incorrect authorization. The attack is possible to be carried out remotely. The exploit is now public and may be used.

Affected products

zhayujie CowAgent: 2.1.0, 2.1.1

References

https://github.com/zhayujie/CowAgent/
https://github.com/zhayujie/CowAgent/issues/2904
https://github.com/zhayujie/CowAgent/issues/2904#issuecomment-4756833239
https://vuldb.com/cve/CVE-2026-18992
https://vuldb.com/submit/862609
https://vuldb.com/vuln/386368
https://vuldb.com/vuln/386368/cti

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