CVE-2026-2728

4.6 mediumEPSS 0.2%

Medium (4.6) in librenms librenms. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

4.6 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

CVSS 3.1

4.8 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-04-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

librenms:librenms

References

https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#xss-on-showconfig-page-2630

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