{"items":[{"id":"NVI-00014083","kind":"vulnerability","title":"Budibase authenticated arbitrary S3 signed upload URL issuance via `/api/attachments/:datasourceId/url`","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-6x9p-4r67-5gjx","CVE-2026-54356"],"plain_summary":"GitHub lists this reviewed advisory for @budibase/server. 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-42154ca5af8c3d1a1bd3ee5de4610270"],"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":"2026-08-26T14:07:28.000Z","value":"7.1 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-42154ca5af8c3d1a1bd3ee5de4610270"}],"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-42154ca5af8c3d1a1bd3ee5de4610270","url":"https://github.com/advisories/GHSA-6x9p-4r67-5gjx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6x9p-4r67-5gjx","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:37.775Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-42154ca5af8c3d1a1bd3ee5de4610270"],"technology":"@budibase/server","known_exclusions":[],"conditions_summary":"### Summary\nBudibase 3.39.7 allows a low-privilege authenticated published-app user with the built-in BASIC role to obtain arbitrary S3 pre-signed upload URLs backed by a workspace datasource's stored server-side credentials.\n\nThe affected endpoint is:\n\n`POST /api/attachments/:datasourceId/url`\n\nThe caller can control:\n```text\nbucket\nkey\n```\nand receives:\n```text\nsignedUrl\npublicUrl\n```\n\nThis lets a low-privilege published-app user mint S3 `PUT` URLs using server-side datasource credentials for attacker-chosen object destinations.\n\nSteps:\n\n1. Log in as an admin user.\n2. Create a new app/workspace.\n3. In the development app context, create an S3 datasource with valid credentials.\n4. Publish the app.\n5. Create a low-privilege user with the built-in BASIC role on the published production app ID.\n6. Log in as that BASIC user.\n7. Send:\n`POST /api/attachments//url`\n\nwith:\n```json\n{\"bucket\":\"foo\",\"key\":\"bar\"}\n```\nand the published app header:\n```text\nx-budibase-app-id: \n```\nObserve a successful response containing:\n```text\nsignedUrl\npublicUrl\n```\n\n### Observed result\n\nThe following behavior:\n\ndev BASIC request: 403 User does not have permission\napp publish:","public_affected_ranges":["<= 3.38.1"]}],"null_published_at":"2026-11-02T10:00:37.205Z","source_updated_at":"2026-08-26T14:07:28.000Z","source_disclosed_at":"2026-08-26T14:07:26.000Z","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":"2026-11-02T09:56:37.775Z"}],"next_cursor":null,"snapshot_revision":"42594"}