{"id":"CVE-2025-61912","aliases":["GHSA-p34h-wq7j-h5v6","PYSEC-2026-1846"],"url":"https://o3.security/vulnerability/CVE-2025-61912","summary":"python-ldap Vulnerable to Improper Encoding or Escaping of Output and Improper Null Termination","details":"python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to 3.4.5, ldap.dn.escape_dn_chars() escapes \\x00 incorrectly by emitting a backslash followed by a literal NUL byte instead of the RFC-4514 hex form \\00. Any application that uses this helper to construct DNs from untrusted input can be made to consistently fail before a request is sent to the LDAP server (e.g., AD), resulting in a client-side denial of service. Version 3.4.5 contains a patch for the issue.","published":"2025-10-10T22:04:25.028Z","modified":"2026-07-15T01:48:57.345537089Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"python-ldap","fixedVersion":"3.4.5"}],"fix":{"url":"https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f","label":"python-ldap/python-ldap@6ea8032"},"references":[{"type":"WEB","url":"https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/61xxx/CVE-2025-61912.json"},{"type":"ADVISORY","url":"https://github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61912"},{"type":"FIX","url":"https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:57.345537089Z"}}