{"items":[{"id":"NVI-00012139","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-96222 - .NET Spoofing Vulnerability","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-vrv5-2jg9-4mmr","CVE-2026-96222"],"plain_summary":"GitHub lists this reviewed advisory for System.Security.Cryptography.Xml. 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-337730b52405444280679f7967fcf946"],"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":"2026-10-19T19:18:08.000Z","value":"7.4 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-b4e0160b3941b12d2d6eff4928ad7894"},{"kind":"CVSS","as_of":"2026-10-22T22:19:55.133Z","value":"7.4 HIGH (3.1)","meaning":"secure@microsoft.com severity; no combined Null risk score.","source_id":"sr-337730b52405444280679f7967fcf946"}],"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-b4e0160b3941b12d2d6eff4928ad7894","url":"https://github.com/advisories/GHSA-vrv5-2jg9-4mmr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-vrv5-2jg9-4mmr","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"},{"id":"sr-337730b52405444280679f7967fcf946","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96222","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-96222","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:59:59.040Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b4e0160b3941b12d2d6eff4928ad7894"],"technology":"System.Security.Cryptography.Xml","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n`KeyInfoX509Data` can accept serialized certificate formats containing attacker-controlled chain metadata instead of requiring a plain X.509 certificate, contributing to certificate-forgery and token-spoofing paths.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/474\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 7.4\n- **Vector:** `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\n[System.Security.Cryptography.Xml](https://www.nuget.org/pa","public_affected_ranges":[">= 8.0.0, <= 8.0.4"]}],"null_published_at":"2026-11-04T10:04:35.929Z","source_updated_at":"2026-10-19T19:18:08.000Z","source_disclosed_at":"2026-10-13T20:45:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T23:14:14.588Z"},{"id":"NVI-00012139","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-96222 - .NET Spoofing Vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vrv5-2jg9-4mmr","CVE-2026-96222"],"plain_summary":"GitHub lists this reviewed advisory for System.Security.Cryptography.Xml. 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-b4e0160b3941b12d2d6eff4928ad7894"],"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":"2026-10-19T19:18:08.000Z","value":"7.4 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-b4e0160b3941b12d2d6eff4928ad7894"}],"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-b4e0160b3941b12d2d6eff4928ad7894","url":"https://github.com/advisories/GHSA-vrv5-2jg9-4mmr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-vrv5-2jg9-4mmr","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b4e0160b3941b12d2d6eff4928ad7894"],"technology":"System.Security.Cryptography.Xml","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n`KeyInfoX509Data` can accept serialized certificate formats containing attacker-controlled chain metadata instead of requiring a plain X.509 certificate, contributing to certificate-forgery and token-spoofing paths.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/474\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 7.4\n- **Vector:** `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\n[System.Security.Cryptography.Xml](https://www.nuget.org/pa","public_affected_ranges":[">= 8.0.0, <= 8.0.4"]}],"null_published_at":"2026-11-01T01:04:01.245Z","source_updated_at":"2026-10-19T19:18:08.000Z","source_disclosed_at":"2026-10-13T20:45:13.000Z","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":"2026-10-31T23:14:14.588Z"}],"next_cursor":null,"snapshot_revision":"40769"}