CVE-2026-40179: Prometheus has Stored XSS via metric names and label values in Prometheus web UI tooltips and metrics explorer

Ghostwire Analysis — What This Means Practically

• Medium CVSS score indicates moderate risk — exploitation requires specific conditions or results in limited impact.
• 2 proof-of-concept exploits available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.