CVE-2026-44671 ZITADEL: LDAP Filter Injection in Login Flow
Unauthenticated attackers can inject LDAP filters to enumerate usernames and extract sensitive directory data via blind injection.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44671?
CVE-2026-44671 is a high-severity vulnerability in zitadel, published on 14 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-90
Which versions are affected by CVE-2026-44671?
7 open source packages ship an affected version, including github.com/zitadel/zitadel. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/zitadel/zitadel Go | All versions | None |
github.com/zitadel/zitadel Go | From 2.71.11 to 2.71.19 | None |
github.com/zitadel/zitadel Go | From 2.71.11 to 2.71.19 | None |
github.com/zitadel/zitadel Go | From 3.1.0 | 3.4.10 |
github.com/zitadel/zitadel Go | From 3.1.0 | 3.4.10 |
github.com/zitadel/zitadel Go | From 4.0.0 | 4.15.0 |
1 more packages
github.com/zitadel/zitadel Go | From 4.0.0 | 4.15.0 |
Products include Zitadel Zitadel.
How do I fix CVE-2026-44671?
Upgrade github.com/zitadel/zitadel to a fixed version for your release line: 3.4.10 or 4.15.0.
Is CVE-2026-44671 being exploited?
There is no known exploitation of CVE-2026-44671 in the wild and no public exploit code.
Other vulnerabilities in zitadel
- CVE-2026-29191 ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint
- CVE-2025-67494 ZITADEL Vulnerable to Unauthenticated Full-Read SSRF via V2 Login
- CVE-2025-27507 IDOR Vulnerabilities in ZITADEL's Admin API that Primarily Impact LDAP Configurations
- CVE-2025-64103 Zitadel Bypass Second Authentication Factor
- CVE-2025-31123 Zitadel Expired JWT Keys Usable for Authorization Grants
Sources
Also known as GHSA-rxvx-hhpj-q6px, GO-2026-5648.