Azure MCP Server Information Disclosure Vulnerability (Microsoft Azure Web Apps)

CVE-2026-32211

CRITICAL 9.1

At a glance

Source: NVD
EPSS: EPSS 0.86 % · percentile 59 (2026-10-31)
State: PUBLISHED
Published: 2026-04-02 23:27 UTC
Updated: 2026-10-15 15:53 UTC
Assigner: microsoft
NVD status: Analyzed

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Description

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

Weaknesses (CWE)

CWE-306 — Missing Authentication for Critical Functionality

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32211

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C	microsoft
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	NVD · secure@microsoft.com (Secondary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	NVD · nvd@nist.gov (Primary)

European references

ENISA EUVD · EUVD-2026-18560
GCVE · GCVE-0-2026-32211

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:azure_web_apps:-:*:*:*:*:*:*:*

Affected products

Product	Versions
Microsoft · Azure Web Apps	affected -

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD