{"items":[{"id":"NVI-00018609","kind":"vulnerability","title":"Bunsink has an SSRF bypass in `validate_webhook_url`","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-fp53-qcf8-2xx2","CVE-2026-44502"],"plain_summary":"GitHub lists this reviewed advisory for bugsink. 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-43bb36c9be8ea54eae585bc37d5cc762"],"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":"2026-06-08T23:27:25.000Z","value":"4.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-43bb36c9be8ea54eae585bc37d5cc762"}],"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-43bb36c9be8ea54eae585bc37d5cc762","url":"https://github.com/advisories/GHSA-fp53-qcf8-2xx2","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fp53-qcf8-2xx2","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:51:53.608Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-43bb36c9be8ea54eae585bc37d5cc762"],"technology":"bugsink","known_exclusions":[],"conditions_summary":"## Summary\n\nBugsink’s webhook URL validation in versions 2.1.2 and earlier could be (partially) bypassed because of a mismatch in URL parsing.\n\nIn some malformed URLs, Python’s standard URL  parser (urllib) and the HTTP client stack (requests / urllib3) do not agree on which host is actually being targeted. That could allow a webhook URL to pass Bugsink’s outbound-host checks while the actual HTTP request is sent somewhere else.\n\n## Impact\n\nThis issue affects Bugsink’s outbound webhook integrations.\n\nAn attacker who can supply or influence a webhook URL may be able to make Bugsink send an outbound HTTP POST request to a host that should have been blocked by the webhook validation logic, including loopback,\nprivate, or otherwise non-allowlisted destinations.\n\nThe practical impact is limited:\n\n- this is an outbound webhook SSRF issue, not a general-purpose proxy\n- Bugsink does not follow redirects for these webhook requests\n- the request shape is constrained by how the malformed URL is normalized by the HTTP client\n- this does not give arbitrary control over every possible request path\n\nIn other words, this is a real validation bypass, but it is narrower than a full arbitrary-request","public_affected_ranges":["<= 2.1.2"]}],"null_published_at":"2026-11-07T07:07:39.862Z","source_updated_at":"2026-06-08T23:27:25.000Z","source_disclosed_at":"2026-05-08T19:09:04.000Z","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":"2026-11-07T00:51:53.608Z"}],"next_cursor":null,"snapshot_revision":"42594"}