# github.com/prometheus/prometheus (Go) vulnerabilities

4 known vulnerabilities (2 high, 2 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://pkg.go.dev/github.com/prometheus/prometheus

## Advisories (4)

### [CVE-2026-44903](https://cve.now/CVE-2026-44903): Prometheus: Stored XSS via crafted histogram bucket label values in the heatmap display of the old Prometheus web UI

- Severity: Medium 5.1
- Published: May 26, 2026
- Affected: fixed in 0.311.3.

### [CVE-2026-42154](https://cve.now/CVE-2026-42154): Prometheus: remote read endpoint allows denial of service via crafted snappy payload

- Severity: High 7.5
- Published: May 4, 2026
- Affected: from 0.306.0, fixed in 0.311.3; fixed in 0.305.2; from 1.0.0-rc.0, through 2.5.0; fixed in 0.305.2; from 0.306.0, fixed in 0.311.3; from 1.0.0-rc.0.

### [CVE-2026-42151](https://cve.now/CVE-2026-42151): Prometheus Azure AD remote write OAuth client secret exposed via config API

- Severity: High 7.5
- Published: May 4, 2026
- Affected: from 0.45.2, fixed in 0.311.3.

### [CVE-2026-40179](https://cve.now/CVE-2026-40179): Prometheus: Stored XSS via metric names and label values in web UI tooltips and metrics explorer

- Severity: Medium 5.3
- Published: Apr 15, 2026
- Affected: fixed in 0.311.2-0.20260410083055-07c6232d159b; from 3.0.0, fixed in 3.5.2; from 3.6.0, fixed in 3.11.2.

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/packages/go/github.com/prometheus/prometheus
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.