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TI-2026-56746 Aliases CVE-2026-82281GHSA-4qgc-qr9j-76rw

Kotaemon Missing Ownership Check in Conversation Functions

Priority HIGH 74CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00433 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
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-2026-82281
  2. 2026-10-03 Alias added: GHSA-4qgc-qr9j-76rw

References

Other 3

  • TI-2026-48505 kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization CVSS 4.0CRITICAL 9.3
  • 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