CVE-2026-26987
MEDIUMCVSS 6.1/10EPSS 0.29%
Last modified
CVE-2026-26987 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. This issue has been fixed in version 26.2.0.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Librenms | Librenms | < 26.2.0 |
References
- https://github.com/librenms/librenms/pull/19038Issue Tracking
- https://github.com/librenms/librenms/releases/tag/26.2.0Product, Release Notes
- https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fprExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-26987?
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. This issue has been fixed in version 26.2.0.
How severe is CVE-2026-26987?
CVE-2026-26987 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.
How do I fix CVE-2026-26987?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-26987?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST