/Vulnerability Library

Arcane <= 1.17.2 - Server-Side Request Forgery

CVE-2026-40242
Verified

Description

Arcane <= 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.

Severity

High

CVSS Score

7.2

Exploit Probability

1%

Affected Product

arcane

Published Date

April 17, 2026

Template Author

0x_akoko

CVE-2026-40242.yaml
7.2Score

CVSS Metrics

CVSS Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVE ID:
cve-2026-40242
CWE ID:
cwe-918

References

https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmjhttps://nvd.nist.gov/vuln/detail/CVE-2026-40242

Remediation Steps

Upgrade to version 1.17.3 or later.