CVE-2026-40242 — exposed on the internet

CVE-2026-40242: CWE-918: Server-Side Request Forgery (SSRF) in getarcaneapp arcane

Internet exposure observed by OffSeq scans · last 30 days

Found on 1 internet-exposed hosts by OffSeq scans; no in-the-wild exploitation has been observed against OffSeq honeypots in this window.

About CVE-2026-40242

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.

Vendor: getarcaneappCWE-918

OffSeq internet scanning found CVE-2026-40242 on 1 exposed hosts in the last 30 days. OffSeq honeypots have not recorded in-the-wild exploitation of this CVE in the current window — this page tracks its exposure footprint and status; if exploitation begins, the live honeypot signal will appear here.

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