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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

23 Oct 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal -~~	() https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal -

16 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-16 18:17

Updated : 2026-10-23 19:17

NVD link : CVE-2026-111618

Mitre link : CVE-2026-111618

CVE.ORG link : CVE-2026-111618

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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