CVE-2026-6129 zhayujie chatgpt-on-wechat CowAgent Agent Mode Service missing authentication
Remote attackers can access the Agent Mode Service without authentication, bypassing security controls in the chatgpt-on-wechat CowAgent application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6129?
CVE-2026-6129 is a medium-severity missing authorization vulnerability in zhayujie chatgpt-on-wechat CowAgent, published on 12 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-6129?
How do I fix CVE-2026-6129?
No fix has been published for CVE-2026-6129 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-6129 being exploited?
There is no known exploitation of CVE-2026-6129 in the wild and no public exploit code.
Sources
Also known as GHSA-8r42-22r7-vfg2.