CRITICAL 9.2 NVD
CVE-2026-84189
LibreNMS through 26.4.0 renders JSON fields (name, ip, model, author, commit message) returned by the admin-configurable Oxidized integration URL (oxidized.url)
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.
References
- https://github.com/librenms/librenms/security/advisories/GHSA-7gww-x7fh-jf9j
- https://www.vulncheck.com/advisories/librenms-before-26.7.0-stored-xss-via-oxidized-api
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-09-01 via NVD.
Risk Timeline
CVE Disclosed2026-09-01 · -1 days ago
Remediation Resources
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