Is this vulnerability remotely exploitable?

It can be, if remote users, external services, or AI-driven inputs can control or influence the localFilePath passed into SessionsPythonPlugin's file operations. In such setups, a remote actor could cause arbitrary file writes on the host where Semantic Kernel runs.

What level of access does an attacker need?

The attacker needs the ability to shape parameters that eventually reach DownloadFileAsync or UploadFileAsync, which may come from API calls, chat/prompt input, or other agents. They do not necessarily need direct filesystem access; controlling the path argument is sufficient.

What is the safest general fix pattern?

Introduce a robust validation layer (e.g., a Function Invocation Filter) that enforces strict allow-listing and canonicalization for all file paths, and ensure that plugins interact with a constrained file service rather than arbitrary filesystem paths.

Severity:

CRITICAL RISK

(9.9)

Arbitrary File Write via Path Traversal (CWE-22) in Semantic Kernel SessionsPythonPlugin

CVE-2026-25592

Published:

Feb 6, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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CRITICAL RISK

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Account Takeover / Loss of Account Control

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CWE-77;CWE-78

HIGH RISK

HIGH

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OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Path Traversal / Arbitrary File Write

CWE:

CWE-22

Impact:

Arbitrary File Write on Host System

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

Vulnerability Type

Category:

Path Traversal / Arbitrary File Write

CWE:

CWE-22

Impact:

Arbitrary File Write on Host System

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

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Arbitrary File Write via Path Traversal (CWE-22) in Semantic Kernel SessionsPythonPlugin

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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