Chainlit < 2.9.4 Arbitrary File Read via /project/element_CVE-2026-22218

7.1 / 10

HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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.

Basic Information

ID CVE-2026-22218

Source VulnCheck

Published Jan 19, 2026 at 23:14

Affected Product

Vendor Chainlit

Product Chainlit

Affected Versions Chainlit Chainlit 0

CWE Classification

CWE-22

References

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    "published": "2026-01-19T23:14:52.969Z",
    "modified": "2026-01-19T23:14:52.969Z",
    "type": "cve",
    "title": "Chainlit < 2.9.4 Arbitrary File Read via /project/element",
    "source": "VulnCheck",
    "references": "https://github.com/Chainlit/chainlit/releases/tag/2.9.4\nhttps://www.vulncheck.com/advisories/chainlit-arbitrary-file-read-via-project-element",
    "id": "CVE-2026-22218",
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    "sourceData": "Chainlit Chainlit 0",
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