{"id":"CVE-2023-25135","aliases":["EUVD-2023-29114","GHSA-r8jw-f89q-p7g6"],"status":"published","title":"vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code...","description":"vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.23926,"percentile":0.97862,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2023-02-03T00:00:00Z","modified":"2026-06-17T05:40:45Z","exploits":[{"source":"nuclei","id":"CVE-2023-25135","title":"vBulletin \u003c= 5.6.9 - Pre-authentication Remote Code Execution","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-25135.yaml"}],"products":[{"vendor":"vbulletin","product":"vbulletin"}],"references":[{"url":"https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachable","tags":["x_transferred","Exploit","Technical Description","Third Party Advisory"]},{"url":"https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patch","tags":["x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-25135"},{"url":"https://github.com/advisories/GHSA-r8jw-f89q-p7g6"}],"sources":{"cve":[{"id":"CVE-2023-25135","description":"vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.","status":"published","published":"2023-02-03T00:00:00Z","modified":"2025-03-26T14:52:17.03Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:35:19.559321Z"}],"euvd":[{"id":"EUVD-2023-29114","description":"vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.","status":"published","published":"2023-02-03T00:00:00Z","modified":"2025-03-26T14:52:17Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:52:51.340114Z"}],"ghsa":[{"id":"GHSA-r8jw-f89q-p7g6","title":"vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code...","description":"vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.","status":"published","published":"2023-02-03T06:30:24Z","modified":"2023-02-21T05:06:18Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:54:11.906282Z"}],"nvd":[{"id":"CVE-2023-25135","description":"vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.","status":"published","published":"2023-02-03T05:15:10.737Z","modified":"2026-06-17T05:40:45.027Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:07:46.064662Z"}]}}