SB2026061542 - Command injection in LibreNMS
Published: June 15, 2026
Security Bulletin ID
SB2026061542
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Command injection (CVE-ID: N/A)
CWE-ID: CWE-77 - Command injection
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to command injection in the Signal alert transport module and scripts/composer_wrapper.php when adding and testing an alert transport entry with crafted Path and Recipient values. A remote user can supply specially crafted transport settings to execute arbitrary code.
Exploitation requires administrative access to create and test an alert transport entry.
Remediation
Install update from vendor's website.