{"id":"CVE-2026-22218","title":"Chainlit < 2.9.4 Arbitrary File Read via /project/element","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 refere…","severity":"high","cvss":7.1,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-22"],"vendor":"Chainlit","product":"Chainlit","affected":["Chainlit < 2.9.4"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-01-21T19:37:14.195072Z"},"exploitAvailable":true,"published":"2026-01-19","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:01:12.271Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-22218","references":[{"url":"https://github.com/Chainlit/chainlit/releases/tag/2.9.4","label":"Chainlit 2.9.4 Release Notes"},{"url":"https://www.zafran.io/resources/chainleak-critical-ai-framework-vulnerabilities-expose-data-enable-cloud-takeover"},{"url":"https://www.vulncheck.com/advisories/chainlit-arbitrary-file-read-via-project-element"}],"tags":["cve.org","exploit-available"],"epss":0.09724,"epssPercentile":0.95549,"ingestedAt":"2026-11-08T14:51:22.477Z","slug":"CVE-2026-22218","body":"## Overview\n\nChainlit 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.\n\n## Affected\n\n- `Chainlit < 2.9.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":39.1,"likelihood":1.9,"exploitation":12,"ransomware":0},"changes":[]}