CVE-2026-42461

Arcane (Huma backend) has an unauthenticated information disclosure vulnerability prior to version 1.18.0. Four GET endpoints under /api/templates* (list, all, specific, and content) were registered without any Security requirement, enabling unauthenticated network clients to read full Compose YA...

GHSA-CXX3-HR75-4Q96 Arcane Vulnerable to Unauthenticated Disclosure of Custom Compose Template Content (incl. `.env` secrets)

Summary Four GET endpoints under /api/templates in Arcane's Huma backend are registered without any Security requirement, allowing any unauthenticated network client to list and read the full Compose YAML and .env content of every custom template stored in the instance. Because Arcane's UI expose...