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Prometheus has Stored XSS via metric names and label values in Prometheus web UI tooltips and metrics explorer
Prometheus has Stored XSS via metric names and label values in Prometheus web UI tooltips and metrics explorer
Affected packages
- github.com/prometheus/prometheus
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/prometheus/prometheus/security/advisories/GHSA-vffh-x6r8-xx99
- https://nvd.nist.gov/vuln/detail/CVE-2026-40179
- https://github.com/prometheus/prometheus/pull/18506
- https://github.com/prometheus/prometheus/commit/07c6232d159bfb474a077788be184d87adcfac3c
- https://github.com/prometheus/prometheus
Structured record: https://osv.dev/vulnerability/GHSA-vffh-x6r8-xx99
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