Cinnamon vulnerabilities

CVE-2026-69098 Critical · 9.8 CWE-502 Aug 4, 2026

kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization

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.

CVE-2025-63914 Medium · 6.5 CWE-409 Nov 24, 2025

An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in…

An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in the \libs\ktem\ktem\index\file\ui.py file does not check the contents of uploaded ZIP files. Although the contents are extracted into a temporary folder that is cleared before each extraction, successfully uploading a ZIP bomb could still cause the server to consume excessive resources during decompression. Moreover, if no further files are uploaded afterward, the extracted data could occupy disk space and potentially render the system unavailable. Anyone with permission to upload files can carry out this attack.

CVE-2025-56527 High · 7.5 CWE-256 Nov 18, 2025

Plaintext password storage in Kotaemon 0.11.0 in the client's localStorage.

CVE-2025-56526 Medium · 6.1 CWE-79 Nov 18, 2025

Cross-site Scripting (XSS) in Cinnamon Kotaemon

Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a crafted PDF.