CVE-2026-82290

MEDIUM CVSS 4.0: 6.0 EPSS 0.34%
Updated Sep 16, 2026
Chainlit
Parameter Value
CVSS 6.0 (MEDIUM)
Type CWE-639 (Authorization Bypass)
Vendor Chainlit
Public PoC No

Chainlit through 2.12.0 fails to validate ownership of feedback records in PUT and DELETE endpoints. Authenticated attackers can delete or modify other users' feedback by supplying arbitrary feedback identifiers, corrupting human-rating data used for model evaluation.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)