{"items":[{"id":"NVI-00013018","kind":"vulnerability","title":"nimiq-blockchain: Validity store off by one error","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-3763-qp59-59vf","CVE-2026-46369"],"plain_summary":"GitHub lists this reviewed advisory for nimiq-blockchain. 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-129b3a0de7aa8e5f0400182537c73efb"],"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":"2026-10-04T22:11:57.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3d5de66f6bc933db41b9079474257891"},{"kind":"CVSS","as_of":"2026-09-09T21:09:13.080Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-129b3a0de7aa8e5f0400182537c73efb"}],"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-3d5de66f6bc933db41b9079474257891","url":"https://github.com/advisories/GHSA-3763-qp59-59vf","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3763-qp59-59vf","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:39:10.636Z"},{"id":"sr-129b3a0de7aa8e5f0400182537c73efb","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46369","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-46369","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T22:35:28.075Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3d5de66f6bc933db41b9079474257891"],"technology":"nimiq-blockchain","known_exclusions":[],"conditions_summary":"### Impact\nThe validity store treats a transaction with stored `block_number = X` as \"in window\" only when `X > last_bn - transaction_validity_window_blocks` (strict inequality). However the protocol's `Transaction::is_valid_at` accepts a transaction for inclusion in any block in `[validity_start_height - blocks_per_batch, validity_start_height + window - 1]`. By choosing `validity_start_height = X + blocks_per_batch` (the largest value still compatible with first inclusion at block X), an attacker can replay the same signed transaction in any block B such that `X + window < B < validity_start_height + window`, i.e., a contiguous window of `blocks_per_batch - 1` blocks (59 on MainNet, ~10 minutes) during which the replay-protection check fails to flag it. The same transaction is then executed twice: the sender is debited twice, the recipient credited twice.\n\n### Patches\nhttps://github.com/nimiq/core-rs-albatross/pull/3772\n\n### Workarounds\nNo known workarounds","public_affected_ranges":["<= 1.5.0"]}],"null_published_at":"2026-11-04T10:04:35.909Z","source_updated_at":"2026-10-04T22:11:57.000Z","source_disclosed_at":"2026-08-12T15:16:53.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T01:39:10.636Z"},{"id":"NVI-00013018","kind":"vulnerability","title":"nimiq-blockchain: Validity store off by one error","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3763-qp59-59vf","CVE-2026-46369"],"plain_summary":"GitHub lists this reviewed advisory for nimiq-blockchain. 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-3d5de66f6bc933db41b9079474257891"],"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":"2026-10-04T22:11:57.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3d5de66f6bc933db41b9079474257891"}],"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-3d5de66f6bc933db41b9079474257891","url":"https://github.com/advisories/GHSA-3763-qp59-59vf","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3763-qp59-59vf","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:39:10.636Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3d5de66f6bc933db41b9079474257891"],"technology":"nimiq-blockchain","known_exclusions":[],"conditions_summary":"### Impact\nThe validity store treats a transaction with stored `block_number = X` as \"in window\" only when `X > last_bn - transaction_validity_window_blocks` (strict inequality). However the protocol's `Transaction::is_valid_at` accepts a transaction for inclusion in any block in `[validity_start_height - blocks_per_batch, validity_start_height + window - 1]`. By choosing `validity_start_height = X + blocks_per_batch` (the largest value still compatible with first inclusion at block X), an attacker can replay the same signed transaction in any block B such that `X + window < B < validity_start_height + window`, i.e., a contiguous window of `blocks_per_batch - 1` blocks (59 on MainNet, ~10 minutes) during which the replay-protection check fails to flag it. The same transaction is then executed twice: the sender is debited twice, the recipient credited twice.\n\n### Patches\nhttps://github.com/nimiq/core-rs-albatross/pull/3772\n\n### Workarounds\nNo known workarounds","public_affected_ranges":["<= 1.5.0"]}],"null_published_at":"2026-11-01T07:29:12.909Z","source_updated_at":"2026-10-04T22:11:57.000Z","source_disclosed_at":"2026-08-12T15:16:53.000Z","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":"2026-11-01T01:39:10.636Z"}],"next_cursor":null,"snapshot_revision":"42594"}