CVE-2026-59098 LobeChat 2.2.9 - Cross-User Document Disclosure via Unscoped RAG Semantic Search
Authenticated attackers can access other users' documents and metadata by exploiting missing user-identifier checks in the semantic search functionality.
- 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-2026-59098?
CVE-2026-59098 is a high-severity missing authorization vulnerability in lobehub, published on 2 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
LobeChat through 2.2.9 contains a broken access control vulnerability in the retrieval-augmented-generation semantic search functionality that allows authenticated attackers to access other users' data by exploiting missing user-identifier predicates in the chunk model semanticSearch method. Attackers can supply arbitrary victim file or knowledge-base identifiers through the chunk retrieval and chat knowledge-base paths to retrieve text content, file names, and metadata belonging to other users.
Weakness: CWE-639
Which versions are affected by CVE-2026-59098?
How do I fix CVE-2026-59098?
No fix has been published for CVE-2026-59098 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-2026-59098 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59098 exists.
Sources
Also known as GHSA-w676-mrp6-5fqq.