VULNERABILITY INTELLIGENCE

CVE-2021-46823

CVSS score6.5 MEDIUM

EPSS probability1.94%

CISA KEVNot currently listed

Published2022-06-18

Last modified2026-06-17

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

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.

Weakness classification

nvd@nist.gov: CWE-1333

Primary references

cve@mitre.org — Third Party Advisory, VDB Entry
cve@mitre.org — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory