# Prometheus vulnerabilities

Source: https://junglewise.ai/threats/technologies/prometheus  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/prometheus.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Prometheus: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-119566, was published on 30 October 2026. 1 vulnerability in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 1
- Last 90 days: 1
- All time: 5 (0 critical, 0 exploited in the wild)

## About Prometheus

Open-source systems monitoring and alerting toolkit with time-series metrics collection and visualization.

## Latest Prometheus vulnerabilities

- [CVE-2026-119566: Prometheus remote_write credential leak via cross-host redirects](https://junglewise.ai/threats/cve-2026-119566-prometheus-through-3-15-1-contains-a-credential-leak) (medium, CVSS 4.8, published 30 Oct 2026)
- [CVE-2026-44903: Prometheus stored XSS in legacy web UI heatmap chart](https://junglewise.ai/threats/cve-2026-44903-prometheus-stored-xss-in-legacy-web-ui-heatmap-chart) (medium, CVSS 6.1, published 26 May 2026)
- [CVE-2026-42154: Prometheus denial of service via memory exhaustion in remote read endpoint](https://junglewise.ai/threats/cve-2026-42154-prometheus-denial-of-service-via-memory-exhaustion-in-remote-read) (high, CVSS 7.5, published 4 May 2026)
- [CVE-2026-42151: Prometheus information disclosure in Azure AD OAuth configuration](https://junglewise.ai/threats/cve-2026-42151-prometheus-information-disclosure-in-azure-ad-oauth-configuration) (high, CVSS 7.5, published 4 May 2026)
- [Prometheus basic authentication bypass in exporter-toolkit](https://junglewise.ai/threats/prometheus-basic-authentication-bypass-in-exporter-toolkit-f8e091e2) (high, CVSS 7.2, published 5 Dec 2022)

## Most severe Prometheus vulnerabilities

- [CVE-2026-42154: Prometheus denial of service via memory exhaustion in remote read endpoint](https://junglewise.ai/threats/cve-2026-42154-prometheus-denial-of-service-via-memory-exhaustion-in-remote-read) (high, CVSS 7.5, published 4 May 2026)
- [CVE-2026-42151: Prometheus information disclosure in Azure AD OAuth configuration](https://junglewise.ai/threats/cve-2026-42151-prometheus-information-disclosure-in-azure-ad-oauth-configuration) (high, CVSS 7.5, published 4 May 2026)
- [Prometheus basic authentication bypass in exporter-toolkit](https://junglewise.ai/threats/prometheus-basic-authentication-bypass-in-exporter-toolkit-f8e091e2) (high, CVSS 7.2, published 5 Dec 2022)
- [CVE-2026-44903: Prometheus stored XSS in legacy web UI heatmap chart](https://junglewise.ai/threats/cve-2026-44903-prometheus-stored-xss-in-legacy-web-ui-heatmap-chart) (medium, CVSS 6.1, published 26 May 2026)
- [CVE-2026-119566: Prometheus remote_write credential leak via cross-host redirects](https://junglewise.ai/threats/cve-2026-119566-prometheus-through-3-15-1-contains-a-credential-leak) (medium, CVSS 4.8, published 30 Oct 2026)

## Vulnerabilities per week

1 vulnerability in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 1 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Prometheus vulnerabilities", https://junglewise.ai/threats/technologies/prometheus, 9 November 2026.