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Steam News6 October 20258mo ago

Minor patch to version 1.0.3

This update patches the "UnityPlayer" library in both the macOS and Windows versions of Widget Satchel to address a known (but to-date unexploited) security issue.

Full notes

Full Widget Satchel update

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What changed

0 fixes0 additions2 changes0 removals
  • Security
changedThis update patches the "UnityPlayer" library in both the macOS and Windows versions of Widget Satchel to address a known (but to-date unexploited) security issue. It has been recommended that all games made with Unity Engine issue this patch, but the current practical risk to users is minimal.
changedMicrosoft Defender (on Windows) has already implemented additional protections against this exploit for games that haven't been patched. Valve has said it will also issue additional protections within the Steam client (on all platforms).

This update patches the "UnityPlayer" library in both the macOS and Windows versions of Widget Satchel to address a known (but to-date unexploited) security issue. It has been recommended that all games made with Unity Engine issue this patch, but the current practical risk to users is minimal.

Microsoft Defender (on Windows) has already implemented additional protections against this exploit for games that haven't been patched. Valve has said it will also issue additional protections within the Steam client (on all platforms).

As this update does not update any game code, the version number for this update is 1.0.3.1, and the version shown on the main title screen will remain 1.0.3.

Source

Steam News / 6 October 2025

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