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CVE-2021-46823

MEDIUM
6.5
CVSS Score
Published: June 18, 2022 at 03:27 PM UTC
Updated: June 17, 2026 at 04:15 AM UTC
1 product affected across 1 vendorPython LDAP

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Severity
MEDIUM6.5
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Python LDAP· Python LDAP
95%
v < 3.4.0
Affected range stops below 3.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
https://exchange.xforce.ibmcloud.com/vulnerabilities/221507
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/python-ldap/python-ldap/security/advisories/GHSA-r8wq-qrxc-hmcm

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1333

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