{"items":[{"id":"NVI-00017708","kind":"vulnerability","title":"Sync-in Server: SSRF protection bypass via IPv4-mapped IPv6 addresses in regExpPrivateIP","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-q4x5-8cj6-52wg","CVE-2026-47684"],"plain_summary":"GitHub lists this reviewed advisory for @sync-in/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-4d35b97d30a61623c241b7590cb5642e"],"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":"2026-07-08T17:36:18.000Z","value":"7.7 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4d35b97d30a61623c241b7590cb5642e"}],"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-4d35b97d30a61623c241b7590cb5642e","url":"https://github.com/advisories/GHSA-q4x5-8cj6-52wg","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-q4x5-8cj6-52wg","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:51.634Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4d35b97d30a61623c241b7590cb5642e"],"technology":"@sync-in/server","known_exclusions":[],"conditions_summary":"Summary:\nThe private IP blocklist regex used in the URL download feature does not match IPv4-mapped IPv6 addresses (e.g. ::ffff:127.0.0.1), allowing SSRF protection to be bypassed on dual-stack systems.\n\nAffected components\n\nbackend/src/applications/files/services/files-manager.service.ts – downloadFromUrl() checks regExpPrivateIP against request.socket.remoteAddress.\nbackend/src/applications/files/utils/url-file.ts – regExpPrivateIP does not include ::ffff: variants.\n\nDetails:\nThe regExpPrivateIP regex in backend/src/applications/files/utils/url-file.ts correctly blocks standard IPv4 private ranges but does not include ::ffff: prefixed variants. On dual-stack systems, Node.js can report a socket's remoteAddress in IPv4-mapped IPv6 form, meaning the check in FilesManager.downloadFromUrl() can be bypassed entirely.\n\nPoC:\npoc.pdf\n\n\n\n\nProof:\n\n\n\n\n\n\nImpact:\nAn attacker can supply a crafted URL pointing to an internal address that gets reported as ::ffff:127.0.0.1 or ::ffff:10.x.x.x, cau","public_affected_ranges":["<= 2.2.1"]}],"null_published_at":"2026-11-05T19:10:21.455Z","source_updated_at":"2026-07-08T17:36:18.000Z","source_disclosed_at":"2026-06-05T16:34:59.000Z","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":"2026-11-04T23:34:51.634Z"}],"next_cursor":null,"snapshot_revision":"39771"}