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CVE-2026-111618— CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpoints

Quick assessment

Affected
coaidev CoAI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CoAI（Chat Nio）4.0.0 及更早版本在生成内容归档和文章归档下载接口中存在未认证的路径遍历漏洞。攻击者可通过 查询参数注入 序列，从而下载任意可读的 或 文件，包括其他用户生成的归档文件。

CVSS 5.3 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
coaidev CoAI ≤ 4.0.0 affected
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I. Basic Information for CVE-2026-111618

Vulnerability Information
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Vulnerability Title
CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpoints
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
coaidev CoAI 0 ~ 4.0.0 -

II. Public POCs for CVE-2026-111618

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111618

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Vendor Advisories for CVE-2026-111618 (1)

Security Blog Posts for CVE-2026-111618 (1)

Other References for CVE-2026-111618 (2)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2026-111618

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