CVE-2026-40459HIGH 8.8EPSS p44.4%

CVE-2026-40459CVE-2026-40459

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

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.61% probability of exploitation · percentile 44.4% · 2026-06-19T12:03:05Z
Published2026-04-17
Last modified2026-04-20

Underlying weaknesses· 1

CWE-90

References

  1. https://cert.pl/en/posts/2026/04/CVE-2026-40458/
  2. https://www.pac4j.org/blog/security-advisory-pac4j-core-and-ldap.html

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')cwe-900%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.