{"schema":"threatline.record/2","record":{"id":"CVE-2026-111618","aliases":[],"summary":"CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpoints","details":"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 readable .tar.gz or .zip file, including other users' generated archives.","categories":["Unclassified"],"product":"CoAI","vendor":"coaidev","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111618","source_modified_at":"2026-10-23T18:38:09.146Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"CoAI","vendor":"coaidev","versions":[{"version":"0","lessThanOrEqual":"4.0.0","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00353,"percentile":0.27766,"score_date":"2026-10-23"},"published_at":"2026-10-16T17:38:55.985Z","modified_at":"2026-10-23T18:38:09.146Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111618","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T18:38:09.146Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111618","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/coaidev/coai/blob/v4.0.0/addition/generation/api.go#L19-L29","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/coaidev/coai/blob/v4.0.0/addition/article/api.go#L25-L35","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/coai-through-4.0.0-unauthenticated-path-traversal-via-archive-download-endpoints","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-23T18:37:59.101817Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-23T18:38:09.146Z","content_hash":"ee5df9c6ad09aff453315d9e2503985d5ca9dadb851bf4a2720497a60a902ad6"}}