by Kastro
Paper/Archive/CVE-2026-69098

CVE-2026-69098

Cinnamon kotaemon — kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization

EPSS 0.9%public exploitCVSS 9.8
critical.is priorityof 100
51
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 60.1.601 × 2012.0Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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__ field. Attackers can exploit this to override the __type__ field with subprocess.check_output and arbitrary arguments, achieving remote code execution with application process privileges.

Affected

ProductAffectedFixed inSource
kotaemon≤ 0.12.0–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/Cinnamon/kotaemon/issues/844writeupvulncheck.com/advisories/kotaemon-unauthenticated-remote-code-execution-via-insecure-deserialization