---
cve: "CVE-2021-46823"
severity: "LOW"
cvss: 3.1
epss: "1.8%"
vendor: "n/a"
kev: false
exploited: false
published: "2022-06-18 16:15:08"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T08:10:26+02:00"
---

# CVE-2021-46823

> 3.1 LOW · 🧪 PoC

## Beschreibung

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.

## Patch verfügbar (OSV)

- 47975ee75c84748abfb8bb7456d5cc0a34cfce41 (Commit)

## Referenzen

- <https://github.com/python-ldap/python-ldap/security/advisories/GHSA-r8wq-qrxc-hmcm>
- <https://exchange.xforce.ibmcloud.com/vulnerabilities/221507>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-46823) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_