CVE-2025-68492
Unknown Unknown - Not Provided
Authorization Bypass in Chainlit Threads Allows Unauthorized Access

Publication date: 2026-01-14

Last updated on: 2026-01-14

Assigner: JPCERT/CC

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.
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Meta Information
Published
2026-01-14
Last Modified
2026-01-14
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2025-68492
EUVD
EUVD-2026-2448
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
chainlit chainlit to 2.8.5 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
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Executive Summary

This vulnerability is an authorization bypass in Chainlit versions prior to 2.8.5. It occurs through a user-controlled key, allowing an attacker who can log in to the product to improperly view threads or obtain thread ownership without proper authorization checks. [1, 2]

Impact Analysis

If exploited, this vulnerability allows an attacker with login credentials to view threads they should not have access to or take ownership of threads improperly. This can lead to unauthorized access to information and potential misuse of thread ownership, though the overall impact is considered low to medium severity. [1]

Mitigation Strategies

The immediate step to mitigate this vulnerability is to update Chainlit to version 2.8.5 or later, which includes the fix for the authorization bypass issue by adding the missing authorization check. [1, 2]

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