CVE-2026-34578 - Vulnerability Analysis
HighCVSS: 8.2Last Updated: April 9, 2026
OPNsense - LDAP Injection & Authentication Bypass
Published: April 9, 2026Updated: April 9, 2026Remote Exploitable
Overview
OPNsense < 26.1.6 contains an LDAP injection caused by unescaped username input in the LDAP authentication connector, letting unauthenticated attackers enumerate valid usernames and bypass group restrictions, exploit requires no authentication.
Severity & Score
Severity: High
CVSS Score: 8.2
Impact
Unauthenticated attackers can enumerate LDAP usernames and bypass group membership restrictions to authenticate as any user with a known password.
Mitigation
Update to version 26.1.6 or later.
References
Related Resources
Details
- CVE ID
- CVE-2026-34578
- Severity
- High
- CVSS Score
- 8.2
- Type
- ldap_injection
- Status
- new
CWE
- CWE-90
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N