CVE-2026-84189
LibreNMS before 26.7.0 Stored XSS via Oxidized API
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | librenms |
| Product | librenms |
| Published | Sep 1, 2026 |
| Last Updated | Oct 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
librenms / librenms
0 < 26.7.0
References
Credits
🔍 k1bana