What is CVE-2026-40179?

CVE-2026-40179 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Prometheus: Stored XSS via metric names and label values in web UI tooltips and metrics explorer

Which CVE IDs does CVE-2026-40179 cover?

CVE-2026-40179 covers the following CVE IDs: CVE-2026-40179. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-40179?

CVE-2026-40179 affects 2 products, including: cbl2 prometheus 2.37.9-7 on CBL Mariner 2.0; cbl2 prometheus 2.37.9-7 on CBL-Mariner 2.0.

CVE-2026-40179Medium

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

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-40179 →

🎯 Affected products2

cbl2 prometheus 2.37.9-7 on CBL Mariner 2.0
cbl2 prometheus 2.37.9-7 on CBL-Mariner 2.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40179
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade