{"id":"CVE-2023-52892","aliases":["GHSA-ff7q-6vwh-v9m4"],"url":"https://o3.security/vulnerability/CVE-2023-52892","summary":"Name confusion in x509 Subject Alternative Name fields","details":"In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.","published":"2024-06-27T00:00:00Z","modified":"2026-08-12T03:51:48.724469986Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00376,"percentile":0.31305,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"phpseclib/phpseclib","fixedVersion":"1.0.22"},{"ecosystem":"Packagist","name":"phpseclib/phpseclib","fixedVersion":"2.0.46"},{"ecosystem":"Packagist","name":"phpseclib/phpseclib","fixedVersion":"3.0.33"}],"fix":{"url":"https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627","label":"phpseclib/phpseclib@6cd6e8c"},"references":[{"type":"WEB","url":"https://github.com/phpseclib/phpseclib/releases/tag/3.0.33"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52892.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52892"},{"type":"REPORT","url":"https://github.com/phpseclib/phpseclib/issues/1943"},{"type":"FIX","url":"https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"},{"type":"PACKAGE","url":"https://github.com/x509-name-testing/name_testing_artifacts"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:48.724469986Z"}}