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VULNERABILITIES

CVE-2026-109357 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/librenms/librenms/security/advisories/GHSA-7cmx-65c5-8h8v CISA-ADP
https://github.com/librenms/librenms/security/advisories/GHSA-7cmx-65c5-8h8v [email protected]
https://www.vulncheck.com/advisories/librenms-before-26.9.0-ldap-filter-injection-authentication-bypass-via-authorization-header [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-109357
NVD Published Date:
Oct 12, 2026
NVD Last Modified:
Oct 15, 2026
Source:
[email protected]
CVE-2026-109357 Details - Not Deferred