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

Prometheus is an open-source monitoring system and time series database. Versions 3.0 through 3.5.1 and 3.6.0 through 3.11.1 have stored cross-site scripting vulnerabilities in multiple components of the Prometheus web UI where metric names and label values are injected into innerHTML without...

GHSA-VFFH-X6R8-XX99 Prometheus has Stored XSS via metric names and label values in Prometheus web UI tooltips and metrics explorer

Impact Stored cross-site scripting XSS via crafted metric names in the Prometheus web UI: Old React UI + New Mantine UI: When a user hovers over a chart tooltip on the Graph page, metric names containing HTML/JavaScript are injected into innerHTML without escaping, causing arbitrary script...

Prometheus has Stored XSS via metric names and label values in Prometheus web UI tooltips and metrics explorer

Impact Stored cross-site scripting XSS via crafted metric names in the Prometheus web UI: Old React UI + New Mantine UI: When a user hovers over a chart tooltip on the Graph page, metric names containing HTML/JavaScript are injected into innerHTML without escaping, causing arbitrary script...