CVE-2021-46823 - CVE House
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Status published Medium CVE-2021-46823

python-ldap before 3.4.0 is vulnerable to a denial of service...

Vulnerability Description

python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2025-61911
python-ldap has sanitization bypass in ldap.filter.escape_filter_chars
Medium 5.5

Affected Vendor

python-ldap

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Affected Software

python-ldap
Vulnerable Versions:
0

Timeline

Official Publish: June 18th, 2022
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.