CVE-2026-57205 SimpleChat: Authenticated users can access other users' profile metadata through user IDOR endpoints
Authenticated users can access other users' profile metadata via IDOR endpoints, exposing sensitive information like email addresses.
- 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-2026-57205?
CVE-2026-57205 is a medium-severity missing authorization vulnerability in microsoft simplechat, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.241.203, the authenticated GET /api/user/info/<user_id> and GET /api/user/profile-image/<user_id> endpoints in application/single_app/route_backend_users.py accepted a caller-supplied user_id and read the matching Cosmos DB user-settings document without object-level authorization, allowing a low-privilege authenticated user to retrieve another user's email address, display name, and profile image. This issue is fixed in version 0.241.203.
Which versions are affected by CVE-2026-57205?
How do I fix CVE-2026-57205?
No fix has been published for CVE-2026-57205 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-2026-57205 being exploited?
There is no known exploitation of CVE-2026-57205 in the wild and no public exploit code.
Sources
Also known as GHSA-x2jq-2m5m-65m4.