Medium 5.3Published Oct 10, 2025

CVE-2025-61912python-ldap is a lightweight directory access protocol (LDAP) client API for Python.

Updated under an hour ago (2026-10-19 08:30 UTC)

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Every CVE for python-ldap

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-116, CWE-170
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

python-ldap python-ldap python-ldap:python-ldap	before 3.4.5	NVD

References

https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3fpatch
https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5release-notes
https://github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6exploit, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.