Read the docs
TI-2026-48505 Aliases CVE-2026-69098GHSA-5cg2-9v3x-66cv

kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization

Priority HIGH 81CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00914 60th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Cinnamonkotaemonup to 0.12.0—No fix listedCNA
  • kotaemon VendorCinnamon Affected up to 0.12.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-69098
  2. 2026-10-03 Alias added: GHSA-5cg2-9v3x-66cv

References

Exploit 1

  • TI-2026-56746 Kotaemon Missing Ownership Check in Conversation Functions CVSS 4.0CRITICAL 9.1
  • TI-2025-35363 Plaintext password storage in Kotaemon 0.11.0 in the client's localStorage. CVSS 3.1HIGH 7.5
  • TI-2025-39488 An issue was discovered in Cinnamon kotaemon 0.11.0. CVSS 3.1MEDIUM 6.5
  • TI-2025-35362 Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute… CVSS 3.1MEDIUM 6.1
  • TI-2025-33322 kotaemon Vulnerable to Path Traversal via Link Upload CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences