Vulnerability · Published Aug 6, 2026 · Assigned by VulDB

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

Medium 6.3

In plain English

A medium-severity incorrect authorization in CowAgent from zhayujie. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.4%top 69.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
zhayujie	CowAgent	2.1.02.1.1

Weakness: CWE-863, CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-386368 | zhayujie CowAgent Self-Evolution Review Agent executor.py _select_tools authorization vdb-entry, technical-description
VDB-386368 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-18992 | CVE Analysis and Report third-party-advisory
Submit #862609 | zhayujie CowAgent 2.1.1 Incorrect Authorization (CWE-863) third-party-advisory
https://github.com/zhayujie/CowAgent/issues/2904 exploit, issue-tracking
https://github.com/zhayujie/CowAgent/issues/2904#issuecomment-4756833239 issue-tracking
https://github.com/zhayujie/CowAgent/ product