CVE-2026-26987

5.3 mediumEPSS 0.3%

Medium (5.3) in librenms librenms. EPSS 0.3% chance of exploitation in the next 30 days.

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. This issue has been fixed in version 26.2.0.

Severity

CVSS 4.0

5.3 medium

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

CVSS 3.1

6.1 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-02-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

librenms:librenms

References

https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b
https://github.com/librenms/librenms/pull/19038
https://github.com/librenms/librenms/releases/tag/26.2.0
https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr

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