diff --git a/advisories/unreviewed/2026/07/GHSA-crf3-v9rr-v7hj/GHSA-crf3-v9rr-v7hj.json b/advisories/unreviewed/2026/07/GHSA-crf3-v9rr-v7hj/GHSA-crf3-v9rr-v7hj.json index 4dbff70f846b..6dddc403dcbd 100644 --- a/advisories/unreviewed/2026/07/GHSA-crf3-v9rr-v7hj/GHSA-crf3-v9rr-v7hj.json +++ b/advisories/unreviewed/2026/07/GHSA-crf3-v9rr-v7hj/GHSA-crf3-v9rr-v7hj.json @@ -1,36 +1,62 @@ { - "schema_version": "1.4.0", - "id": "GHSA-crf3-v9rr-v7hj", - "modified": "2026-07-23T09:32:01Z", - "published": "2026-07-23T09:32:01Z", - "aliases": [ - "CVE-2026-16723" - ], - "details": "A remote code execution (RCE) vulnerability exists in fastjson 1.2.68 through 1.2.83. This vulnerability is exploitable under fastjson's stock default configuration — no AutoType enablement required, no classpath gadget required.", - "severity": [ - { - "type": "CVSS_V3", - "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H" - } - ], - "affected": [], - "references": [ - { - "type": "ADVISORY", - "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16723" - }, - { - "type": "WEB", - "url": "https://github.com/alibaba/fastjson2/wiki/Security-Advisory:-Remote-Code-Execution-in-fastjson-1.2.68%E2%80%931.2.83" - } - ], - "database_specific": { - "cwe_ids": [ - "CWE-20" + "schema_version": "1.4.0", + "id": "GHSA-crf3-v9rr-v7hj", + "modified": "2026-07-28T21:47:00Z", + "published": "2026-07-23T09:32:01Z", + "aliases": [ + "CVE-2026-16723" + ], + "summary": "Remote Code Execution via FNV-1a hash collision in AutoType validation in Fastjson2", + "details": "Fastjson2 versions 2.0.62 and earlier contain an FNV-1a hash collision bypass in AutoType type name validation. Attackers can use this collision to construct class name suffixes that match the hashes of built-in whitelisted + classes, triggering remote class loading and enabling arbitrary code execution.", + "severity": [ + { + "type": "CVSS_V3", + "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H" + } ], - "severity": "CRITICAL", - "github_reviewed": false, - "github_reviewed_at": null, - "nvd_published_at": "2026-07-23T09:16:26Z" + "affected": [ + { + "package": { + "ecosystem": "Maven", + "name": "com.alibaba.fastjson2:fastjson2" + }, + "ranges": [ + { + "type": "ECOSYSTEM", + "events": [ + { + "introduced": "0" + }, + { + "last_affected": "2.0.62" + } + ] + } + ] + } + ], + "references": [ + { + "type": "ADVISORY", + "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16723" + }, + { + "type": "WEB", + "url": "https://github.com/alibaba/fastjson2/pull/7695" + }, + { + "type": "WEB", + "url": "https://github.com/alibaba/fastjson2/pull/7703" + } + ], + "database_specific": { + "cwe_ids": [ + "CWE-502" + ], + "severity": "CRITICAL", + "github_reviewed": false, + "github_reviewed_at": null, + "nvd_published_at": "2026-07-23T09:32:01Z" + } } -} \ No newline at end of file