CRITICAL 9.2 NVD
CVE-2026-109357
LibreNMS before 26.9.0 contains an LDAP filter injection in ldap-authorization and ad-authorization modes because usernames are inserted unescaped into LDAP sea
LibreNMS before 26.9.0 contains an LDAP filter injection in ldap-authorization and ad-authorization modes because usernames are inserted unescaped into LDAP search filters and authentication only checks user existence. When REMOTE_USER is not forwarded, unauthenticated attackers can send a wildcard username via HTTP Basic Authorization (PHP_AUTH_USER) to match all users and groups and gain admin access.
References
- https://github.com/librenms/librenms/security/advisories/GHSA-7cmx-65c5-8h8v
- https://www.vulncheck.com/advisories/librenms-before-26.9.0-ldap-filter-injection-authenti
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-10-12 via NVD.
Risk Timeline
CVE Disclosed2026-10-12 · -1 days ago
Remediation Resources
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