CVE-2026-82290

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Chainlit/chainlit
https://github.com/Chainlit/chainlit/blob/190ea74239d9e84b26e7c91bc2882dd038942564/backend/chainlit/server.py
https://github.com/Chainlit/chainlit/issues/2975
https://www.vulncheck.com/advisories/chainlit-feedback-endpoints-missing-ownership-validation
https://github.com/Chainlit/chainlit/issues/2975

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 20:20

Updated : 2026-09-16 13:42

NVD link : CVE-2026-82290

Mitre link : CVE-2026-82290

CVE.ORG link : CVE-2026-82290

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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