CVE-2026-2728: LibreNMS: Cross-Site Scripting in ShowConfigController

low Affects librenms/librenms. Feed 2026.10.29.4, updated 2026-10-29; published 2026-05-18.

LibreNMS: Cross-Site Scripting in ShowConfigController

Package: librenms/librenms Composer
Affected versions: >=25.12.0 and <26.3.0
Fixed in: 26.3.0
Severity: low CVSS 3.5
Exploitation: not on CISA KEV · EPSS 0% (13.2th percentile)
Published: 2026-05-18
Source: osv.dev

References

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Related advisories

CVE-2022-3562 medium Cross-site Scripting in librenms/librenms same package: librenms/librenms
CVE-2022-4067 medium Cross-site Scripting in librenms/librenms same package: librenms/librenms
CVE-2022-4069 medium Cross-site Scripting in librenms/librenms same package: librenms/librenms
CVE-2024-49754 high LibreNMS has a stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/api-acc same package: librenms/librenms
CVE-2018-20434 critical LibreNMS arbitrary OS commands execution same package: librenms/librenms
CVE-2023-4347 high LibreNMS Cross-site Scripting vulnerability same package: librenms/librenms