What is CVE-2026-32211?

CVE-2026-32211 is a critical-severity vulnerability in Microsoft Azure Web Apps, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-04-03.

How severe is CVE-2026-32211?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Microsoft Azure Web Apps

CVE-2026-32211

Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network.

Vulnerability class: Broken Authentication

Published 2026-04-03 · last modified 2026-07-24.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.002

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Azure MCP Server Information Disclosure Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-32211?: CVE-2026-32211 is a critical-severity vulnerability in Microsoft Azure Web Apps, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-04-03.
How severe is CVE-2026-32211?: Critical severity. CVSS v3 base score is 9.1 out of 10.