CVE-2026-22218
7.1
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Chainlit | Chainlit | 0 < 2.9.4 | affected |
Weaknesses
- CWE-22: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
References
- https://github.com/Chainlit/chainlit/releases/tag/2.9.4
- https://www.zafran.io/resources/chainleak-critical-ai-framework-vulnerabilities-expose-data-enable-cloud-takeover
- https://www.vulncheck.com/advisories/chainlit-arbitrary-file-read-via-project-element
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