CVE-2026-111618
CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpoints
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 16, 2026
- Updated
- Oct 23, 2026
- Reserved
- Oct 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
CoAIcoaidev |
|
References
- https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversalthird-party-advisory
- https://github.com/coaidev/coai/blob/v4.0.0/addition/generation/api.go#L19-L29technical-description
- https://github.com/coaidev/coai/blob/v4.0.0/addition/article/api.go#L25-L35technical-description
- VulnCheck Advisory: CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpointsthird-party-advisory
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