CVE-2026-84188librenms before 26.7.0 Stored XSS via graph_descr settings
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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LibreNMS versions <= 26.4.0 contain a stored cross-site scripting vulnerability in the graph_descr.<graphtype> configuration settings, which are echoed verbatim without HTML escaping in includes/html/pages/graphs.inc.php. An administrator can store a malicious HTML payload that executes in the browser of any authenticated user who views the affected graph type. The issue is fixed in version 26.7.0.
- CVSS
- 4.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
librenms librenms librenms:librenms (from the name) | before 26.7.0; 26.7.0 not affected | CNA record |
References
- https://github.com/librenms/librenms/security/advisories/GHSA-7cj5-v4pp-v632vendor-advisory
- https://www.vulncheck.com/advisories/librenms-before-26.7.0-stored-xss-via-graph-descr-settingsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.