CVE-2026-61644 Missing authorization in FastGPT
Low-privileged users can access other tenants' dataset content by manipulating the initialId parameter in the getCollectionQuote endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-61644?
CVE-2026-61644 is a high-severity missing authorization vulnerability in labring FastGPT, published on 15 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
FastGPT is a knowledge-based AI application platform. From 4.14.17 until 4.15.0-beta5, the POST /api/core/chat/record/getCollectionQuote endpoint authenticates the caller's chat and collection context, but the initialId center-node lookup is not bound to that authorized context. A low-privileged tenant user can call the endpoint with valid attacker-owned appId, chatId, chatItemDataId, and collectionId values while supplying another tenant's dataset data id as initialId, causing the response to include foreign dataset quote or full-text content. This issue is fixed in version 4.15.0-beta5.
Weakness: CWE-863
Which versions are affected by CVE-2026-61644?
How do I fix CVE-2026-61644?
No fix has been published for CVE-2026-61644 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-2026-61644 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-61644 exists.
Sources
Also known as GHSA-mmg6-2g54-j896.