What is CVE-2026-82281?

CVE-2026-82281 is a high-severity vulnerability in Cinnamon Kotaemon, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.4/10. Published 2026-08-28.

How severe is CVE-2026-82281?

High severity. CVSS v3 base score is 7.4 out of 10.

Auth bypass in Cinnamon Kotaemon

CVE-2026-82281

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Cinnamon Kotaemon

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (technical-description)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-82281?: CVE-2026-82281 is a high-severity vulnerability in Cinnamon Kotaemon, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.4/10. Published 2026-08-28.
How severe is CVE-2026-82281?: High severity. CVSS v3 base score is 7.4 out of 10.