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CVE-2026-44671

ZITADEL: LDAP Filter Injection in Login Flow

Published: May 14, 2026Updated: May 15, 2026 Sources: CVE List NVDCWE-90
7.5HIGH
NVD MITRE
EPSS Score
0.5%
Top 61.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

Description

ZITADEL is an open source identity management platform. From 2.71.11 to before 3.4.10 and 4.15.0, a vulnerability was discovered in Zitadel's LDAP identity provider implementation, which fails to properly escape user-provided usernames before incorporating them into LDAP search filters. This allows unauthenticated attackers to perform LDAP Filter Injection during the login process. While this vulnerability does not allow for a full authentication bypass, an attacker can use LDAP metacharacters (such as *, (, )) to perform blind LDAP injection. By observing the different failure (or success) responses, an attacker can systematically enumerate valid usernames and extract sensitive attribute data from the connected LDAP directory. This vulnerability is fixed in 3.4.10 and 4.15.0.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-90

Affected Products

zitadel
commercialaka zitadel identity
zitadelSaaS
Security Products / identity-access-mgmt

Exploitability

Workaround Available
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References

https://github.com/zitadel/zitadel/releases/tag/v3.4.10
github.com
https://github.com/zitadel/zitadel/releases/tag/v4.15.0
github.com
https://github.com/zitadel/zitadel/security/advisories/GHSA-rxvx-hhpj-q6px
github.com

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