What is GHSA-rx4g-rhf6-xw5x?

GHSA-rx4g-rhf6-xw5x is a security advisory published by GitHub Security Advisories with Critical severity. LibreNMS before 26.9.0 contains an LDAP filter injection in ldap-authorization and ad...

Which CVE IDs does GHSA-rx4g-rhf6-xw5x cover?

GHSA-rx4g-rhf6-xw5x covers the following CVE IDs: CVE-2026-109357. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-rx4g-rhf6-xw5x?

GHSA-rx4g-rhf6-xw5x has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-rx4g-rhf6-xw5xCriticalCVSS 8.1

LibreNMS before 26.9.0 contains an LDAP filter injection in ldap-authorization and ad...

Vendor

GitHub Security Advisories

Published

October 12, 2026

Last Modified

October 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-109357 →

📋 Description

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 (4)

https://github.com/librenms/librenms/security/advisories/GHSA-7cmx-65c5-8h8v
https://nvd.nist.gov/vuln/detail/CVE-2026-109357
https://www.vulncheck.com/advisories/librenms-before-26.9.0-ldap-filter-injection-authentication-bypass-via-authorization-header
https://github.com/advisories/GHSA-rx4g-rhf6-xw5x