Medium severity6.1NVD Advisory· Published Feb 20, 2026· Updated Jun 17, 2026

CVE-2026-26987

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
librenms/librenmsPackagist	< 26.2.0	26.2.0

Affected products

Librenms/Librenms2 versions
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*range: <26.2.0
- (no CPE)range: < 26.2.0
ghsa-coords
pkg:composer/librenms/librenms
Range: < 26.2.0

Patches

Vulnerability mechanics

References

github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208bnvdPatchWEB
github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fprnvdExploitThird Party AdvisoryWEB
github.com/advisories/GHSA-gqx7-99jw-6fprghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-26987ghsaADVISORY
github.com/librenms/librenms/pull/19038nvdIssue TrackingWEB
github.com/librenms/librenms/releases/tag/26.2.0nvdProductRelease NotesWEB

News mentions

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cvss	0.397
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000