# CVE-2026-40459

> Vulnerability · severity: **HIGH** (CVSS 8.8).

## 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

## Key facts

- **CVE ID:** CVE-2026-40459
- **Published:** 2026-04-17
- **CVSS severity:** HIGH
- **CVSS base score:** 8.8
- **CWE codes:** CWE-90

## Affected products

- `pac4j:pac4j`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40459

## Citation

> AI Analytics. CVE-2026-40459. Retrieved 2026-07-15 from https://api.ai-analytics.org/cve/CVE-2026-40459. Derived from NIST NVD. Licensed CC0.

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