{"cve":"CVE-2026-111618","nvd":{"published":"2026-10-16T18:17:41.393","modified":"2026-10-23T19:17:42.657","status":"Deferred","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-22"],"references":["https://github.com/coaidev/coai/blob/v4.0.0/addition/article/api.go#L25-L35","https://github.com/coaidev/coai/blob/v4.0.0/addition/generation/api.go#L19-L29","https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal","https://www.vulncheck.com/advisories/coai-through-4.0.0-unauthenticated-path-traversal-via-archive-download-endpoints","https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-111618","score":0.0043,"percentile":0.36981,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}