{"id":"CVE-2026-55176","revision":"c1d47ea68c4941a4b9118cf1903c2d39","records":[{"revision":"c1d47ea68c4941a4b9118cf1903c2d39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55176","aliases":[],"title":"Soft Machine: Cross-tenant workspace API auth bypass via shared `CONTAINER_SHARED_SECRET` bearer token","description":"Soft Machine is a Virtual Machine–based agentic development environment / Cloud OS. In versions 0.2.247 and prior, two authentication helpers in /app/server.js — verifyContainerAuth() and authenticateWorkspaceHttp() — accept the global CONTAINER_SHARED_SECRET as a bearer token without verifying which workspace the caller belongs to. Because that secret is set identically on every container in the Fly app and is reachable from the user-facing process environment inside each workspace, any tenant can use it to authenticate to any other tenant's workspace API. The result is cross-workspace read, write, and destructive-restore primitives reachable from any paying customer's shell. The existing per-workspace token check (workspaceTokenMatches) protects the user-facing per-workspace token path, but the shared-secret bearer path bypasses it entirely. At time of publication, there are no publicly known patches.","state":0,"publishedAt":"2026-09-30T16:30:42.729+00:00","modifiedAt":"2026-10-02T16:22:50.416+00:00","affected":[{"ecosystem":"Vendor product","name":"security","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Soft-Machine-io\",\n                    \"product\": \"security\",\n                    \"versions\": [\n                        {\n                            \"version\": \"<= 0.2.247\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9,"severity":"CRITICAL"}],"references":["https://github.com/Soft-Machine-io/security/security/advisories/GHSA-63gh-vp9f-vxhj"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55176","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55176","identifiers":["CVE-2026-55176"]},"retained":false,"historicalAffected":[]}],"coverage":[]}