CVE-2026-44671 Details
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.
A vulnerability exists in ZITADEL's LDAP identity provider implementation, affecting versions 2.71.11 prior to 3.4.10 and 4.0.0 prior to 4.15.0. The issue arises because the application does not properly escape user-provided usernames before adding them to LDAP search filters. This flaw allows unauthenticated attackers to execute LDAP Filter Injection during the login process. While it does not enable a complete authentication bypass, the vulnerability can be exploited to perform blind LDAP injection using LDAP metacharacters. By analyzing the responses from the server, attackers can systematically identify valid usernames and extract sensitive attribute data from the connected LDAP directory.
Users are advised to upgrade to ZITADEL versions 3.4.10 or 4.15.0. If an immediate upgrade is not possible, ensure that the LDAP directory has strict access controls to limit information disclosure.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/zitadel/zitadel/releases/tag/v3.4.10 | [email protected] | ProductRelease Notes |
| https://github.com/zitadel/zitadel/releases/tag/v4.15.0 | [email protected] | ProductRelease Notes |
| https://github.com/zitadel/zitadel/security/advisories/GHSA-rxvx-hhpj-q6px | [email protected] | MitigationPatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-90 | Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| zitadel zitadel | >= 2.71.11, < 3.4.10 >= 4.0.0, < 4.15.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 14, 2026 | New CVE Received | [email protected] |