CVE-2026-82281 Kotaemon Missing Ownership Check in Conversation Functions
Attackers can access, delete, or rename other users' conversations by bypassing ownership checks in Kotaemon.
- 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-2026-82281?
CVE-2026-82281 is a critical missing authorization vulnerability in Cinnamon kotaemon, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Kotaemon through 0.12.0 fails to properly validate conversation ownership in select_conv, delete_conv, rename_conv, and on_set_public_conversation functions in control.py. Attackers can read other users' chat histories, delete conversations, or rename conversations by supplying arbitrary conversation identifiers without proper authorization checks.
Weakness: CWE-639
Which versions are affected by CVE-2026-82281?
How do I fix CVE-2026-82281?
No fix has been published for CVE-2026-82281 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-2026-82281 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82281 exists.
Sources
Also known as GHSA-4qgc-qr9j-76rw.