CVE-2026-40242 | THREATINT

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.

PUBLISHED Reserved 2026-04-10 | Published 2026-04-10 | Updated 2026-04-10 | Assigner GitHub_M

HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

< 1.17.3
affected

References

github.com/…arcane/security/advisories/GHSA-ff24-4prj-gpmj

github.com/getarcaneapp/arcane/releases/tag/v1.17.3

cve.org (CVE-2026-40242)

nvd.nist.gov (CVE-2026-40242)

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