{"items":[{"id":"NVI-00015388","kind":"vulnerability","title":"FrontMCP: Server-Side Request Forgery (SSRF) in the OpenAPI adapter spec-change poller","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-8q49-2h5h-434x"],"plain_summary":"GitHub lists this reviewed advisory for @frontmcp/adapters. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-6315e22b47136ea1e01cbe8a74825327"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-24T22:40:00.000Z","value":"5.9 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6315e22b47136ea1e01cbe8a74825327"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-6315e22b47136ea1e01cbe8a74825327","url":"https://github.com/advisories/GHSA-8q49-2h5h-434x","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-8q49-2h5h-434x","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:59:04.660Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6315e22b47136ea1e01cbe8a74825327"],"technology":"@frontmcp/adapters","known_exclusions":[],"conditions_summary":"## Summary\n\nThe OpenAPI adapter's spec-change **poller** (`OpenApiSpecPoller`) re-fetched the\nconfigured spec `url` on a timer using a raw global `fetch()`, bypassing the SSRF\nguard (`safeFetch` / `assertUrlSafe`) that `OpenAPIToolGenerator.fromURL()` applies\nto the initial spec load. As a result, the pinning/DNS-resolution hardening delivered\nvia `mcp-from-openapi >= 2.5.0` (advisory GHSA-65h7-9wrw-629c) protected the initial\nload but **not** the recurring poll of the same URL. When polling is enabled against\nan untrusted or attacker-influenceable spec URL, this is an unguarded SSRF vector.\n\n## Details\n\nThe initial spec load is guarded. `OpenapiAdapter` resolves a secure `refResolution`\npolicy and passes it to the guarded loader:\n\n```ts\n// libs/adapters/src/openapi/openapi.adapter.ts — initializeGenerator()\nreturn await OpenAPIToolGenerator.fromURL(this.options.url, {\n  // ...\n  followRedirects: this.options.loadOptions?.followRedirects ?? false,\n  refResolution, // secure default: external $refs off, internal targets blocked\n});\n```\n\nBut the poller — which re-fetches **the same URL** on every interval — did not:\n\n```ts\n// libs/adapters/src/openapi/openapi-spec-poller.ts — doFetch","public_affected_ranges":["<= 1.5.5"]}],"null_published_at":"2026-11-03T10:03:31.362Z","source_updated_at":"2026-07-24T22:40:00.000Z","source_disclosed_at":"2026-07-24T22:40:00.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-03T09:59:04.660Z"}],"next_cursor":null,"snapshot_revision":"42594"}