Threat database

CVE-2026-55176 is a critical authorization vulnerability in Soft Machine versions 0.2.247 and earlier. The flaw exists in two authentication helper functions that accept a global shared secret as a bearer token without verifying the caller's workspace. This allows any tenant to use the shared secret to access and manipulate other tenants' workspace APIs, leading to cross-workspace read, write, and destructive restore capabilities. No patches are publicly known at the time of publication.

Soft Machine is a Virtual Machine–based agentic development environment / Cloud OS. In versions 0.2.247 and prior, the workspace HTTP service that listens on 0.0.0.0:8080 inside each sm-ws-* Fly Machine exposes endpoints (/health, /file/<path>, /archive/<dir>) without any authentication or origin check. Any host that can reach TCP/8080 on a workspace can read arbitrary files under that workspace's /workspace root and download whole project trees as tar archives. Because every workspace shares the same Fly private 6PN and resolves all peer addresses via the unauthenticated _instances.internal TXT record, every other sm-ws-* machine on the same Fly app/org is a reachable, unauthenticated attacker — the trust boundary (workspace owner ↔ everyone-else) is missing. At time of publication, there are no publicly known patches.