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Prometheus vulnerable to stored XSS via crafted histogram bucket label values in the old web UI heatmap display

Prometheus vulnerable to stored XSS via crafted histogram bucket label values in the old web UI heatmap display

CVE-2026-44903Published 4 months agoUpdated 5 days agoSource: OSV

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

Structured record: https://osv.dev/vulnerability/GHSA-fw8g-cg8f-9j28

Recommended response stack

Snyk — Scan your dependencies in CI and fix this vulnerability.→

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