CVE-2026-32211
published 2026-04-03CVE-2026-32211: Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network.
PriorityP351high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EPSS
0.83%
52.9th percentile
Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | azure_web_apps | — | — |
| msrc | azure_web_apps | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vendor_msrc9.1CRITICAL
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Microsoft
Azure MCP Server Information Disclosure Vulnerability
vendor_msrc·2026-04-02·CVSS 9.1
CVE-2026-32211 [CRITICAL] CWE-306 Azure MCP Server Information Disclosure Vulnerability
Azure MCP Server Information Disclosure Vulnerability
Description: Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network.
FAQ: Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.
Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.
Azure MCP Server: Azure MCP Server
Microsoft: Microsoft
Customer Action Required: No
Impact: Information Disclosure
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:N/A
GHSA
GHSA-5w7p-v6h9-q8c5: Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network
ghsa_unreviewed·2026-04-03
CVE-2026-32211 [CRITICAL] CWE-306 GHSA-5w7p-v6h9-q8c5: Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network
Missing authentication for critical function in Azure MCP Server allows an unauthorized attacker to disclose information over a network.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-04-03
Published