Path Traversal in Coaidev Coai
CVE-2026-111618
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal (third-party-advisory)
- github.com/coaidev/coai/blob/v4.0.0/addition/generation/api.go (technical-description)
- github.com/coaidev/coai/blob/v4.0.0/addition/article/api.go (technical-description)
- www.vulncheck.com/advisories/coai-through-4.0.0-unauthenticated-path-traversal-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111618?
- CVE-2026-111618 is a medium-severity vulnerability in Coaidev Coai, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-10-16.
- How severe is CVE-2026-111618?
- Medium severity. CVSS v3 base score is 5.3 out of 10.