CVE-2026-58649

MediumCVSS 6.5/10Last modified Oct 30, 2026

Description

Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-346

Affected software

Vendor	Product	Versions
Microsoft	.NET 10.0 runtime	>= 10.0.0, < 10.0.111, 10.0.400
Microsoft	.NET 11.0 runtime	>= 11.0.0, < 11.0 RC1
Microsoft	.NET 8.0 runtime	>= 8.0.0, < 8.0.130, 8.0.424
Microsoft	.NET 9.0 runtime	>= 9.0.0, < 9.0.120, 9.0.317
Microsoft	Microsoft Visual Studio 2022 version 17.14	>= 17.14.0, < 17.14.40
Microsoft	Microsoft Visual Studio 2026 version 18.9	>= 18.9.0, < 18.9.3

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58649Patch, Vendor Advisory

Timeline

Published: Sep 8, 2026
Last modified: Oct 30, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-58658.8Type Confusion in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a craf CVE-2026-586507.8Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.CVE-2026-586517.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.CVE-2026-586527.5luci-app-travelmate (and the travelmate package) contain a privilege-escalation flaw: a LuCI/rpcd session holding the luci-app-travelmate wr CVE-2026-586534.3PraisonAI before 0.1.7 fails to validate that project_id in issue create and update request bodies belongs to the URL workspace. An attacker CVE-2026-586544.3The Grav API plugin (getgrav/grav-plugin-api) 1.0.0 contains an unrestricted file upload vulnerability in the avatar upload endpoint (/api/v CVE-2026-586558.8The bundled Grav Flex Objects plugin (getgrav/grav-plugin-flex-objects) before 1.4.0 contains a stored server-side template injection vulner CVE-2026-586567.5Grav API plugin before v1.0.0-rc.16 accepts JWT tokens via the ?token= URL query parameter and responds with Access-Control-Allow-Origin: *,CVE-2026-586574.8Grav before 2.0.0 (affected through 2.0.0-rc.9 and the 2.0 branch) contains a stored CSS injection vulnerability in the Markdown image resiz CVE-2026-586588.2GPUStack through 2.2.1, fixed in commit 4e20551, contains an unauthenticated information disclosure vulnerability that allows unauthenticate CVE-2026-586597.8PyTorch Lightning through 2.6.5, fixed in commit d710d68, contains a remote code execution vulnerability in the _load_state function that im CVE-2026-58668.8Use after free in Media in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a c