CVE-2026-111704 LangChat through commit 2a6285a Missing Authentication on REST API Controllers
Unauthenticated attackers can access REST APIs to read plaintext passwords, steal API keys, and create super-admin accounts in LangChat.
- 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-2026-111704?
CVE-2026-111704 is a critical missing authorization vulnerability in langchat, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
LangChat through commit 2a6285a contains a missing authentication vulnerability that allows unauthenticated remote attackers to access REST controllers because no Sa-Token interceptor is registered. Attackers can query /api/v1/auth/users to read plaintext passwords, retrieve LLM provider API keys, create super-admin accounts, and modify or delete data.
Weakness: CWE-306
Which versions are affected by CVE-2026-111704?
How do I fix CVE-2026-111704?
No fix has been published for CVE-2026-111704 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-2026-111704 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111704 exists.
Sources
Also known as GHSA-hgqj-chvw-c4p5.