CVE-2026-6204: LibreNMS is Vulnerable to Remote Code Execution by Arbitrary File Write

high Affects librenms/librenms. Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

LibreNMS is Vulnerable to Remote Code Execution by Arbitrary File Write

Package
librenms/librenms Composer
Affected versions
>=1.48 and <26.3.0
Fixed in
26.3.0
Severity
high
Exploitation
not on CISA KEV · EPSS 8% (94.5th percentile)
Published
2026-03-26
Source
osv.dev

References

CWE-78
NVD recordlibrenms/librenms advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

# or, without Composer
pipx install phpwarden   &&   phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs   How findings are ranked

Related advisories