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I. Basic Information for CVE-2026-40242
Vulnerability Information
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Vulnerability Title
Arcane Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.17.3, the /api/templates/fetch endpoint accepts a caller-supplied url parameter and performs a server-side HTTP GET request to that URL without authentication and without URL scheme or host validation. The server's response is returned directly to the caller. type. This constitutes an unauthenticated SSRF vulnerability affecting any publicly reachable Arcane instance. This vulnerability is fixed in 1.17.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
arcane 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
arcane是Arcane开源的一个Docker管理软件。 Arcane 1.17.3之前版本存在代码问题漏洞，该漏洞源于/api/templates/fetch端点接受调用者提供的url参数并进行无身份验证、无URL方案或主机验证的服务端HTTP GET请求，可能导致未经验证的服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
getarcaneapparcane < 1.17.3 -
II. Public POCs for CVE-2026-40242
#POC DescriptionSource LinkShenlong Link
1Arcane <= 1.17.3 contains an unauthenticated server-side request forgery caused by lack of URL scheme and host validation in /api/templates/fetch endpoint, letting remote attackers perform SSRF, exploit requires no authentication. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-40242.yamlPOC Details
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III. Intelligence Information for CVE-2026-40242
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IV. Related Vulnerabilities
Same product: arcane
Same vendor: getarcaneapp
Same weakness: CWE-918
V. Comments for CVE-2026-40242

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