{"items":[{"id":"NVI-00018289","kind":"vulnerability","title":"free5GC's PCF npcf-smpolicycontrol POST /sm-policies panics on downstream UDR/OpenAPI 404 via nil pointer dereference","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wr8j-6chw-gm6p","CVE-2026-44316"],"plain_summary":"GitHub lists this reviewed advisory for github.com/free5gc/pcf. 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-06ef38d7c2ab68f363ed040c40e46a4a"],"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":"2026-06-08T23:47:07.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-06ef38d7c2ab68f363ed040c40e46a4a"}],"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-06ef38d7c2ab68f363ed040c40e46a4a","url":"https://github.com/advisories/GHSA-wr8j-6chw-gm6p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wr8j-6chw-gm6p","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:50:36.189Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-06ef38d7c2ab68f363ed040c40e46a4a"],"technology":"github.com/free5gc/pcf","known_exclusions":[],"conditions_summary":"### Summary\nfree5GC's PCF `POST /npcf-smpolicycontrol/v1/sm-policies` handler (`HandleCreateSmPolicyRequest`) panics with a nil-pointer dereference when a downstream OpenAPI consumer call (UDR lookup) returns `404 Not Found` and the consumer wrapper returns `err != nil` together with a nil response struct. The handler logs the OpenAPI error and continues executing instead of returning, then dereferences the nil response struct on a subsequent line and panics. Gin recovery converts the panic into `HTTP 500`, so a single attacker-shaped POST returns 500 instead of a clean 4xx whenever the downstream lookup fails. The PCF process keeps running.\n\nThe trigger is a single POST containing input that causes the downstream UDR lookup to fail (e.g. an unknown DNN). In v4.2.1 this endpoint is also reachable WITHOUT an `Authorization` header because the PCF `Npcf_SMPolicyControl` route group is mounted without inbound auth middleware (see free5gc/free5gc#844). So in the validation lab the trigger is fully unauthenticated.\n\n### Details\nValidated against the PCF container in the official Docker compose lab.\n- free5GC version: `v4.1.0` (originally reported on v4.1.0; same defect present in v4.2.1","public_affected_ranges":["< 1.4.2"]}],"null_published_at":"2026-11-07T07:07:39.802Z","source_updated_at":"2026-06-08T23:47:07.000Z","source_disclosed_at":"2026-05-08T22:39:43.000Z","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":"2026-11-07T00:50:36.189Z"}],"next_cursor":null,"snapshot_revision":"42594"}