Chainlit versions prior to 2.8.5 contain an authorization bypass through...

2.3 CVSS

Vulnerability Description

Chainlit versions prior to 2.8.5 contain an authorization bypass through user-controlled key vulnerability. If this vulnerability is exploited, threads may be viewed or thread ownership may be obtained by an attacker who can log in to the product.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

Affected Vendor

Chainlit

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Affected Software

Chainlit

Vulnerable Versions:

prior to 2.8.5

Timeline

Official Publish: January 14th, 2026

Last Modified: January 15th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Weaknesses (CWE)

CWE-639

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

Initial Access

T1078 Valid Accounts

Persistence

T1213 Data from Information Repositories

Collection

T1021 Remote Services

Lateral Movement

T1098 Account Manipulation

Privilege Escalation