CVE-2026-40459CWE-90

LDAP Injection in PAC4J

High · published April 17, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
51.7
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00677 · 51.7th percentile
Weakness
CWE-90 · Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Published
2026-04-17T13:18Z
EPSS history
Timeline
  • 17 APR 13:18Z
    LDAP Injection in PAC4J
    cvelistv5