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CVE-2026-25592

🚨 CRITICAL

Semantic Kernel is an SDK used to build, orchestrate, and deploy AI agents and multi-agent systems. Prior to 1.70.0, an Arbitrary File Write vulnerability has been identified in Microsoft's Semantic K...

Published
Feb 06, 2026
Last Modified
Feb 06, 2026
Views
31
Bookmarks
0

Description

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Semantic Kernel is an SDK used to build, orchestrate, and deploy AI agents and multi-agent systems. Prior to 1.70.0, an Arbitrary File Write vulnerability has been identified in Microsoft's Semantic Kernel .NET SDK, specifically within the SessionsPythonPlugin. The problem has been fixed in Microsoft.SemanticKernel.Core version 1.70.0. As a mitigation, users can create a Function Invocation Filter which checks the arguments being passed to any calls to DownloadFileAsync  or UploadFileAsync and ensures the provided localFilePath is allow listed.

CVSS Scores

CVSS 3.1 9.9
9.9
CRITICAL
CVSS 2.0 9.9

References

github.com github.com github.com

Additional Information

Source
security-advisories@github.com
State
Awaiting analysis

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