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

CVSS 7.5 · High EPSS 0.25% · P49

Affected Version Matrix 2

VendorProductVersion RangeStatus
zitadelzitadel>= 2.71.11, < 3.4.10affected
>= 4.0.0, < 4.15.0affected
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I. Basic Information for CVE-2026-44671

Vulnerability Information
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Vulnerability Title
ZITADEL: LDAP Filter Injection in Login Flow
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
LDAP查询中使用的特殊元素转义处理不恰当(LDAP注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
ZITADEL 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZITADEL是瑞士ZITADEL开源的一个身份和访问管理平台。 ZITADEL 2.71.11版本至3.4.10之前版本和4.15.0之前版本存在注入漏洞，该漏洞源于LDAP身份提供程序实现未正确转义用户提供的用户名，可能导致LDAP过滤注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
zitadelzitadel >= 2.71.11, < 3.4.10 -

II. Public POCs for CVE-2026-44671

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8047 chars
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III. Intelligence Information for CVE-2026-44671

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IV. Related Vulnerabilities

Same product: zitadel
Same vendor: zitadel
Same weakness: CWE-90

V. Comments for CVE-2026-44671

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