LibreNMS before 26.7.0 Stored XSS via Oxidized API
LibreNMS through 26.4.0 renders JSON fields (name, ip, model, author, commit message) returned by the admin-configurable Oxidized integration URL (oxidized.url) into the device showconfig page without applying htmlspecialchars(). An administrator who points the Oxidized URL at an attacker-controlled server (SSRF) can cause it to return malicious JSON, resulting in stored/persistent cross-site scripting affecting all users who view any device's showconfig tab. Fixed in 26.7.0.
CVE-2026-84189
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-84189
librenms
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "librenms",
"product": "librenms",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "26.7.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "26.7.0",
"versionType": "semver"
}
],
"packageURL": "pkg:composer/librenms/librenms",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-84189
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #12933 · Revision 1
- Added to Heist Feed
- Publisher date