Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Getarcane | Arcane | < 1.17.3 |
Related Weaknesses (CWE)
References
- https://github.com/getarcaneapp/arcane/releases/tag/v1.17.3Release Notes
- https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmjExploitVendor Advisory
- https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmjExploitVendor Advisory
FAQ
What is CVE-2026-40242?
CVE-2026-40242 is a vulnerability with a CVSS score of 7.2 (HIGH). 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-s...
How severe is CVE-2026-40242?
CVE-2026-40242 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40242?
Check the references section above for vendor advisories and patch information. Affected products include: Getarcane Arcane.