PT-2026-32043 · Arcane · Arcane

Published 2026-04-10 · Updated 2026-04-28 · CVE-2026-40242

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Arcane versions prior to 1.17.3

Description Arcane is an interface for managing Docker containers, images, networks, and volumes. 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. This constitutes an unauthenticated Server-Side Request Forgery (SSRF) vulnerability affecting any publicly reachable Arcane instance. The response handling can leak information such as the first byte of a non-JSON response, HTTP status codes, and TCP connection status (connection refused or i/o timeout).

Recommendations Update to version 1.17.3 or later.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-40242

GHSA-FF24-4PRJ-GPMJ

Affected Products

Arcane

References · 10

• 🔥 https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmj · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-40242 · Security Note
• https://osv.dev/vulnerability/GHSA-ff24-4prj-gpmj · Vendor Advisory
• https://github.com/getarcaneapp/arcane · Note
• https://github.com/getarcaneapp/arcane/releases/tag/v1.17.3 · Note
• https://twitter.com/VulmonFeeds/status/2042871558897557921 · Twitter Post
• https://reddit.com/r/VulnMatter/comments/1skdkn8/resumen_diario_de_vulnerabilidades_13042026 · Reddit Post
• https://twitter.com/_cvereports/status/2049068801103147421 · Twitter Post
• https://twitter.com/CVEnew/status/2042710167985222012 · Twitter Post
• https://twitter.com/pdnuclei_bot/status/2045019470620680258 · Twitter Post