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CVE-2026-40459— LDAP Injection in PAC4J

EPSS 0.14% · P34
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I. Basic Information for CVE-2026-40459

Vulnerability Information
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Vulnerability Title
LDAP Injection in PAC4J
Source: NVD (National Vulnerability Database)
Vulnerability Description
PAC4J is vulnerable to LDAP Injection in multiple methods. A low-privileged remote attacker can inject crafted LDAP syntax into ID-based search parameters, potentially resulting in unauthorized LDAP queries and arbitrary directory operations. This issue was fixed in PAC4J versions 4.5.10, 5.7.10 and 6.4.1
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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
pac4j 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pac4j是pac4j开源的一个简单而强大的 Java 安全引擎。用于验证用户、获取他们的配置文件和管理授权，以保护 Web 应用程序和 Web 服务。 pac4j 4.5.10之前版本、5.7.10之前版本和6.4.1之前版本存在安全漏洞，该漏洞源于多个方法中存在LDAP注入，可能导致低权限远程攻击者将特制的LDAP语法注入基于ID的搜索参数，从而执行未经授权的LDAP查询和任意目录操作。
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
PAC4JPAC4J 4.0 ~ 4.5.10 -

II. Public POCs for CVE-2026-40459

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III. Intelligence Information for CVE-2026-40459

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IV. Related Vulnerabilities

Same product: PAC4J
Same vendor: PAC4J
Same weakness: CWE-90

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