CVE-2026-6129: zhayujie chatgpt-on-wechat CowAgent Agent Mode Service missing authentication

Severity: high (CVSS 7.3 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: 2026-04-12 · updated 2026-10-26
Weakness: CWE-287

Description

A vulnerability was detected in zhayujie chatgpt-on-wechat CowAgent up to 2.0.4. This affects an unknown function of the component Agent Mode Service. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

zhayujie chatgpt-on-wechat CowAgent: 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4

References

https://github.com/zhayujie/chatgpt-on-wechat/issues/2741
https://github.com/zhayujie/chatgpt-on-wechat/issues/2741#issue-4191903266
https://vuldb.com/submit/795272
https://vuldb.com/vuln/356992
https://vuldb.com/vuln/356992/cti

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