CVE-2025-68492: Chainlit Chainlit Contains An Authorization Bypass Vulnerability

LOW
Advisory Identifier: GHSA-v492-6xx2-p57g
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CVSS 4.2
CWE-639
Published
Advisory Summary

CVE-2025-68492 is a LOW (CVSS 4.2) chainlit contains an authorization bypass vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting Chainlit libraries in the PyPI ecosystem. The issue involves chainlit contains an authorization bypass vulnerability. Remediation is available by upgrading affected packages to version 2.8.5.

CVE-2025-68492 at a Glance

CVE Identifier CVE-2025-68492
GHSA Identifier GHSA-v492-6xx2-p57g
Severity LOW
CVSS v3.1 Base Score 4.2
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product Chainlit
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 4.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-68492

To remediate this vulnerability, upgrade all affected Chainlit dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

chainlit fixed: 2.8.5 
pip install chainlit>=2.8.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show chainlit

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-68492, inspect your installed packages using pip:

pip show chainlit

Analyze the terminal output to locate any version of Chainlit in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.8.5), your application is affected.

Note: The pip show chainlit command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-639: Authorization Bypass Through User-Controlled Key, where 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. In Chainlit, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-68492 Affected Chainlit Versions

1 component(s)
Fixed Versions:
2.8.5
Product / Package Ecosystem Affected Versions Fixed Version
chainlit
pypi/chainlit
PyPI
< 2.8.5
2.8.5

References

NVD — CVE-2025-68492 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-68492
Chainlit Source Repository REPOSITORY
https://github.com/Chainlit/chainlit/pull/2637
Security Fix Commit FIX COMMIT
https://github.com/Chainlit/chainlit/commit/8f1153db439eca58ae5c50c8276ba6fdd311448e
Chainlit Source Repository REPOSITORY
https://github.com/Chainlit/chainlit
Chainlit Source Repository REPOSITORY
https://github.com/Chainlit/chainlit/releases
Chainlit Release RELEASE
https://github.com/Chainlit/chainlit/releases/tag/2.8.5
jvn.jp/en/jp/jvn34964581 WEB
https://jvn.jp/en/jp/JVN34964581

Frequently Asked Questions

What is CVE-2025-68492?
CVE-2025-68492 is a security vulnerability in Chainlit involving Chainlit contains an authorization bypass vulnerability under CWE-639: Authorization Bypass Through User-Controlled Key.
Which Chainlit versions are affected?
Affected versions include releases prior to 2.8.5 across affected packages: chainlit.
What version fixes CVE-2025-68492?
Upgrading to 2.8.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is chainlit affected?
Yes, chainlit is affected in releases prior to 2.8.5. Upgrade your dependency to 2.8.5 or later.
What is the CVSS score of CVE-2025-68492?
CVE-2025-68492 has a CVSS v3.1 base score of 4.2 (LOW) with vector string CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2025-68492?
CVE-2025-68492 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (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.).
How can I check PyPI dependencies for CVE-2025-68492?
Run the dependency tree command: 'pip show chainlit'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-v492-6xx2-p57g",
  "modified" : "2026-01-14T21:16:04Z",
  "published" : "2026-01-14T09:31:21Z",
  "aliases" : [ "CVE-2025-68492" ],
  "summary" : "Chainlit contains an authorization bypass vulnerability",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "chainlit"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.8.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-68492"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Chainlit/chainlit/pull/2637"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Chainlit/chainlit/commit/8f1153db439eca58ae5c50c8276ba6fdd311448e"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Chainlit/chainlit"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Chainlit/chainlit/releases"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Chainlit/chainlit/releases/tag/2.8.5"
  }, {
    "type" : "WEB",
    "url" : "https://jvn.jp/en/jp/JVN34964581"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-639" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-14T21:16:04Z",
    "nvd_published_at" : "2026-01-14T07:16:14Z"
  }
}