What is CVE-2026-69098?

CVE-2026-69098 is a critical-severity vulnerability in Cinnamon Kotaemon, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-08-04.

How severe is CVE-2026-69098?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Cinnamon Kotaemon

CVE-2026-69098

kotaemon through 0.12.0 contains an insecure deserialization vulnerability in the check_connection endpoint that allows unauthenticated attackers to instantiate arbitrary Python classes by supplying crafted YAML/JSON input with a __type__…

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cinnamon Kotaemon — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-69098?: CVE-2026-69098 is a critical-severity vulnerability in Cinnamon Kotaemon, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-08-04.
How severe is CVE-2026-69098?: Critical severity. CVSS v3 base score is 9.8 out of 10.