{"id":"CVE-2026-111618","title":"CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpoints","summary":"CoAI (Chat Nio) through 4.0.0 contains an unauthenticated path traversal vulnerability in the generation and article archive download endpoints via the hash query parameter. Attackers can supply ../ sequences in hash to download any read…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-22"],"vendor":"coaidev","product":"CoAI","affected":["CoAI <= 4.0.0"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T17:38:55.985Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111618","references":[{"url":"https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal"},{"url":"https://github.com/coaidev/coai/blob/v4.0.0/addition/generation/api.go#L19-L29"},{"url":"https://github.com/coaidev/coai/blob/v4.0.0/addition/article/api.go#L25-L35"},{"url":"https://www.vulncheck.com/advisories/coai-through-4.0.0-unauthenticated-path-traversal-via-archive-download-endpoints","label":"VulnCheck Advisory: CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpoints"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T18:43:08.692Z","slug":"CVE-2026-111618","body":"## Overview\n\nCoAI (Chat Nio) through 4.0.0 contains an unauthenticated path traversal vulnerability in the generation and article archive download endpoints via the hash query parameter. Attackers can supply ../ sequences in hash to download any readable .tar.gz or .zip file, including other users' generated archives.\n\n## Affected\n\n- `CoAI <= 4.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}