🛡️ CVE-2026-40242
🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-918 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE CWE-918
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-10
Updated 2026-06-02
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
arcane 1.17.3
github.com/getarcaneapp/arcane/backend

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