CVE-2026-82281

HIGH 7.4

Kotaemon Missing Ownership Check in Conversation Functions

CVSS Score

7.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
Vendor	cinnamon
Product	kotaemon
Published	Aug 28, 2026

Stay Ahead of the Next One

Get instant alerts for cinnamon kotaemon

Be the first to know when new high vulnerabilities affecting cinnamon kotaemon are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

Cinnamon / kotaemon

0 ≤ 0.12.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Cinnamon/kotaemon/issues/846 github.com: https://github.com/Cinnamon/kotaemon github.com: https://github.com/Cinnamon/kotaemon/blob/9ad3e4e49aa35b8acddd235918a5d9753c1cfdf9/libs/ktem/ktem/pages/chat/control.py vulncheck.com: https://www.vulncheck.com/advisories/kotaemon-missing-ownership-check-in-conversation-functions

Credits

🔍 George Chen