CVE-2026-111704
CRITICAL
CVSS 9.8
Published: 2026-10-16
Modified: 2026-10-16
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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.
Quick Facts
| CVE ID | CVE-2026-111704 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cd…
- https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cd…
- https://github.com/LangChat/langchat/blob/2a6285a6b8c51d51cd…
- https://hackmd.io/@hieuPenguinnn/langchat-missing-global-aut…
- https://www.vulncheck.com/advisories/langchat-through-commit…