CVE-2025-61911
Publication date 13 October 2025
Last updated 13 October 2025
Ubuntu priority
Description
python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to 3.4.5, the sanitization method `ldap.filter.escape_filter_chars` can be tricked to skip escaping of special characters when a crafted `list` or `dict` is supplied as the `assertion_value` parameter, and the non-default `escape_mode=1` is configured. The method `ldap.filter.escape_filter_chars` supports 3 different escaping modes. `escape_mode=0` (default) and `escape_mode=2` happen to raise exceptions when a `list` or `dict` object is supplied as the `assertion_value` parameter. However, `escape_mode=1` computes without performing adequate logic to ensure a fully escaped return value. If an application relies on the vulnerable method in the `python-ldap` library to escape untrusted user input, an attacker might be able to abuse the vulnerability to launch ldap injection attacks which could potentially disclose or manipulate ldap data meant to be inaccessible to them. Version 3.4.5 fixes the issue by adding a type check at the start of the `ldap.filter.escape_filter_chars` method to raise an exception when the supplied `assertion_value` parameter is not of type `str`.
Status
Package | Ubuntu Release | Status |
---|---|---|
python-ldap | 25.10 questing |
Needs evaluation
|
25.04 plucky |
Needs evaluation
|
|
24.04 LTS noble |
Needs evaluation
|
|
22.04 LTS jammy |
Needs evaluation
|
|
20.04 LTS focal |
Needs evaluation
|
|
18.04 LTS bionic |
Needs evaluation
|
|
16.04 LTS xenial |
Needs evaluation
|
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2025-61911
- https://github.com/python-ldap/python-ldap/security/advisories/GHSA-r7r6-cc7p-4v5m
- https://github.com/python-ldap/python-ldap/commit/3957526fb1852e84b90f423d9fef34c7af25b85a (main)
- https://github.com/python-ldap/python-ldap/commit/464fddacd63092d6e01c62a38316a713c30ca98a (python-ldap-3.4.5)
- https://github.com/python-ldap/python-ldap/commit/3957526fb1852e84b90f423d9fef34c7af25b85a
- https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5