CVE-2026-82290
Chainlit Feedback Endpoints Missing Ownership Validation
- State
- Published
- Severity
- 6.0 Medium
- Published
- Aug 28, 2026
- Updated
- Sep 24, 2026
- Reserved
- Aug 28, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.0 Medium | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
chainlitChainlit |
|
References
- GitHub Issue #2975issue-tracking
- https://github.com/Chainlit/chainlitproduct
- Vulnerable code: server.pytechnical-description
- VulnCheck Advisory: Chainlit Feedback Endpoints Missing Ownership Validationthird-party-advisory
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