Vulnerability · Published Aug 28, 2026 · Assigned by VulnCheck
CVE-2026-82281Kotaemon Missing Ownership Check in Conversation Functions
High 7.4
In plain English
A high-severity authorization bypass via user-controlled key in kotaemon from Cinnamon. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.4%top 62.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- GitHub Issue #846 issue-tracking
- https://github.com/Cinnamon/kotaemon product
- Vulnerable code: control.py technical-description
- VulnCheck Advisory: Kotaemon Missing Ownership Check in Conversation Functions third-party-advisory