CVE-2026-42461 Details.
Arcane < 1.18.0 - Unauthenticated Template and Env Disclosure
Atlas does not check this one. Needs a scripted sequence.
This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one.
About CVE-2026-42461. What It Means.
Arcane < 1.18.0 contains an information disclosure caused by missing authorization on /api/templates GET endpoints, letting unauthenticated network clients read sensitive Compose YAML and .env content, exploit requires network access
Affected Product. What Is Hit.
- Vendor
- getarcaneapp
- Product
- Getarcaneapp Arcane
More CVEs In Getarcaneapp Arcane.
FAQ
Common Questions.
Arcane < 1.18.0 - Unauthenticated Template and Env Disclosure. Arcane < 1.18.0 contains an information disclosure caused by missing authorization on /api/templates GET endpoints, letting unauthenticated network clients read sensitive Compose YAML and .env content, exploit requires network access
No. This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one. The facts about CVE-2026-42461 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-42461 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Getarcaneapp Arcane to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-42461. Atlas does not run a check for it, so nothing here says whether a particular site is affected.