Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

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Windows Subscribe
Hummingbird Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-2p3q-h3hg-jcqq Microsoft Security Advisory CVE-2026-47303 – .NET Elevation of Privilege Vulnerability
Ubuntu USN Ubuntu USN USN-8553-1 .NET vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 07 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft microsoft Visual Studio 2022
Microsoft microsoft Visual Studio 2026
Vendors & Products Microsoft microsoft Visual Studio 2022
Microsoft microsoft Visual Studio 2026

Sat, 18 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-472
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics threat_severity

None

threat_severity

Important


Tue, 14 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 14 Jul 2026 19:00:00 +0000

Type Values Removed Values Added
Description Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Title ASP.NET Core Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft .net
Microsoft visual Studio 2022
Microsoft visual Studio 2026
Weaknesses CWE-302
CWE-863
CWE-90
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
Microsoft visual Studio 2022
Microsoft visual Studio 2026
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-28T17:50:13.544Z

Reserved: 2026-05-18T23:53:33.898Z

Link: CVE-2026-47303

cve-icon Vulnrichment

Updated: 2026-07-14T19:11:27.008Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-14T19:17:08.707

Modified: 2026-07-22T21:17:15.777

Link: CVE-2026-47303

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-14T18:45:33Z

Links: CVE-2026-47303 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-07T11:20:10Z