Description

Chainlit versions prior to 2.9.4 contain an arbitrary file read vulnerability in the /project/element update flow. An authenticated client can send a custom Element with a user-controlled path value, causing the server to copy the referenced file into the attacker’s session. The resulting element identifier (chainlitKey) can then be used to retrieve the file contents via /project/file/<chainlitKey>, allowing disclosure of any file readable by the Chainlit service.

INFO

Published Date :

2026-01-19T23:14:52.969Z

Last Modified :

2026-03-05T01:30:19.248Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-22218 vulnerability.

Vendors Products
Chainlit
  • Chainlit
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-22218.

URL Resource
https://github.com/Chainlit/chainlit/releases/tag/2.9.4 cve-icon cve-icon
https://www.vulncheck.com/advisories/chainlit-arbitrary-file-read-via-project-element cve-icon cve-icon
https://www.zafran.io/resources/chainleak-critical-ai-framework-vulnerabilities-expose-data-enable-cloud-takeover cve-icon cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact