CVE-2026-82281CWE-639

CVE-2026-82281

High · published August 29, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
25.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
9.1 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00331 · 25.0th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-08-29T00:20Z
References (5)
https://github.com/Cinnamon/kotaemon · [email protected]https://github.com/Cinnamon/kotaemon/blob/9ad3e4e49aa35b8acddd235918a5d9753c1cfdf9/libs/ktem/ktem/pages/chat/control.py · [email protected]https://github.com/Cinnamon/kotaemon/issues/846 · [email protected]https://www.vulncheck.com/advisories/kotaemon-missing-ownership-check-in-conversation-functions · [email protected]https://github.com/Cinnamon/kotaemon/issues/846 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 30 AUG 16:19Z
    EPSS moved — → 0%
    epss
  • 28 AUG 16:19Z
    Kotaemon Missing Ownership Check in Conversation Functions
    cvelistv5