CVE-2026-44671: ZITADEL has LDAP Filter Injection in Login Flow

May 8, 2026 (updated May 15, 2026)

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.

References

github.com/advisories/GHSA-rxvx-hhpj-q6px
github.com/zitadel/zitadel/releases/tag/v3.4.10
github.com/zitadel/zitadel/releases/tag/v4.15.0
github.com/zitadel/zitadel/security/advisories/GHSA-rxvx-hhpj-q6px
nvd.nist.gov/vuln/detail/CVE-2026-44671

Code Behaviors & Features

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