{"items":[{"id":"NVI-00017821","kind":"vulnerability","title":"Apple App Store Server Python Library: SignedDataVerifier accepts stale OCSP GOOD responses and can bypass certificate revocation checks","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-8f6j-263m-g72x"],"plain_summary":"GitHub lists this reviewed advisory for app-store-server-library. 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-6e84d2f09981ae854efc25cfa7fb2b44"],"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":[],"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-6e84d2f09981ae854efc25cfa7fb2b44","url":"https://github.com/advisories/GHSA-8f6j-263m-g72x","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-8f6j-263m-g72x","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:12.429Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6e84d2f09981ae854efc25cfa7fb2b44"],"technology":"app-store-server-library","known_exclusions":[],"conditions_summary":"### Summary\n`SignedDataVerifier` attempts to perform online revocation checking when `enable_online_checks=True`, but its OCSP validation logic accepts stale `GOOD` responses as valid indefinitely. In `appstoreserverlibrary/signed_data_verifier.py`, `_ChainVerifier.check_ocsp_status()` verifies the OCSP response signature and CertID match, but never validates the freshness window carried by `producedAt`, `thisUpdate`, or `nextUpdate`.\n\nAs a result, a previously valid signed OCSP `GOOD` response can be replayed after it is expired, and the library will still treat the certificate as good. If an App Store signing certificate or intermediate is ever revoked, applications using this library with online checks enabled can continue accepting JWS objects signed with the revoked key as long as a stale signed OCSP response is replayed.","public_affected_ranges":[">= 0.2.0, <= 3.1.1"]}],"null_published_at":"2026-11-05T19:10:21.471Z","source_updated_at":"2026-07-13T23:49:14.000Z","source_disclosed_at":"2026-07-13T23:49:14.000Z","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":"2026-11-04T23:34:12.429Z"}],"next_cursor":null,"snapshot_revision":"39771"}