CVE-2025-61912
Published: Oct 10, 2025
Modified: Oct 14, 2025
Description
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.
| Vendor | Product | Versions |
|---|---|---|
python-ldap | python-ldap | affected < 3.4.5 |
References
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