CVE-2026-26992 is a Stored Cross-Site Scripting (XSS) vulnerability affecting LibreNMS versions 26.1.1 and below, where unsanitized port group names allow administrative users to inject malicious scripts. The vulnerability has a CVSS score of 4.8 (Medium), indicating a network-based attack with low attack complexity, requiring high privileges and user interaction, potentially leading to limited confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE. The issue has been patched in LibreNMS version 26.2.0.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 26.2.0CPE matchmatch criteria | cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.