What is CVE-2026-2728?

CVE-2026-2728 is a medium-severity vulnerability in Librenms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-04-13.

How severe is CVE-2026-2728?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Librenms

CVE-2026-2728

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (13.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Librenms — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

ab69c47f-b95e-4bf2-b2d9-4b1fd1b24b4a (Exploit, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2026-2728?: CVE-2026-2728 is a medium-severity vulnerability in Librenms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-04-13.
How severe is CVE-2026-2728?: Medium severity. CVSS v3 base score is 4.8 out of 10.