LDAP Injection Affecting org.pac4j:pac4j-ldap package, versions [,4.5.10)[5.0.0-RC1,5.7.10)[6.0.0-RC1,6.4.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGPAC4J-16109662
- published19 Apr 2026
- disclosed17 Apr 2026
- creditBartlomiej Dmitruk
Introduced: 17 Apr 2026
CVE-2026-40459 (opens in a new tab)How to fix?
Upgrade org.pac4j:pac4j-ldap to version 4.5.10, 5.7.10, 6.4.1 or higher.
Overview
Affected versions of this package are vulnerable to LDAP Injection in the LdapProfileService class, which accepts ID-based search parameters in multiple methods. A privileged attacker can execute unauthorized LDAP queries and perform arbitrary directory operations.