CVE-2026-22218

MEDIUM

6.5

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/20/2026

Last Modified2/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

chainlit:chainlit

Weaknesses (CWE)

CWE-22

References

https://github.com/Chainlit/chainlit/releases/tag/2.9.4(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/chainlit-arbitrary-file-read-via-project-element(disclosure@vulncheck.com)

https://www.zafran.io/resources/chainleak-critical-ai-framework-vulnerabilities-expose-data-enable-cloud-takeover(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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