CVE-2026-2728
Published:April 13, 2026
Updated:April 22, 2026
LibreNMS versions before 26.3.0 are affected by an authenticated Cross-site Scripting vulnerability on the showconfig page. Successful exploitation requires administrative privileges. Exploitation could result in XSS attacks being performed against other users with access to the page.
Affected Packages
https://github.com/librenms/librenms.git (GITHUB):
Affected version(s) >=0.1 <26.3.0Fix Suggestion:
Update to version 26.3.0librenms/librenms (PHP):
Affected version(s) >=dev-analysis-b0PBV5 <26.3.0Fix Suggestion:
Update to version 26.3.0librenms/librenms (PHP):
Affected version(s) >=dev-analysis-b0PBV5 <26.3.0Fix Suggestion:
Update to version 26.3.0Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
4.6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
