{"items":[{"id":"NVI-00014169","kind":"vulnerability","title":"utcp-http SSRF: HTTP tool invocation follows redirects without re-validating the target","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9qhg-99ww-9mqc"],"plain_summary":"GitHub lists this reviewed advisory for utcp-http. 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-54814bfd7d923cc4677b2a23132a5168"],"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":"2026-08-25T15:48:53.000Z","value":"8.2 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-54814bfd7d923cc4677b2a23132a5168"}],"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-54814bfd7d923cc4677b2a23132a5168","url":"https://github.com/advisories/GHSA-9qhg-99ww-9mqc","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9qhg-99ww-9mqc","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:37.775Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-54814bfd7d923cc4677b2a23132a5168"],"technology":"utcp-http","known_exclusions":[],"conditions_summary":"## Summary\n\n`HttpCommunicationProtocol.call_tool` validates only the pre-redirect tool URL, then issues the request with redirects enabled and never re-checks where it lands. A tool whose endpoint is an attacker-controlled public URL can therefore `302`-redirect the UTCP client into an internal service including the cloud metadata endpoint and the response body is returned to the tool caller. This is a working SSRF + internal-data-exfiltration primitive.\n\nThis is the redirect invariant of the SSRF class fixed in GHSA-39j6-4867-gg4w; that fix added an invocation-time URL check but left the redirect hop unguarded. This vector bypasses the GHSA-39j6-4867-gg4w mitigation via unvalidated redirects.\n\n## Root cause\n\n1. The resolved URL is validated once, before the request:\n\nhttps://github.com/universal-tool-calling-protocol/python-utcp/blob/4ed0a48b84a452338bd3e996efb0d169e8d75ac2/plugins/communication_protocols/http/src/utcp_http/http_communication_protocol.py#L281\n\n2. The request is then made with aiohttp's default `allow_redirects=True` and no\n   per-hop revalidation, so the redirect target bypasses the check entirely:\n\nhttps://github.com/universal-tool-calling-protocol/python-utcp/bl","public_affected_ranges":["<= 1.1.3"]}],"null_published_at":"2026-11-02T10:00:37.217Z","source_updated_at":"2026-08-25T15:48:53.000Z","source_disclosed_at":"2026-08-25T15:48:51.000Z","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"}