0xPolygon/heimdall-v2 - v0.5.5 New

Published: Jan 12, 2026

Release Summary

Heimdall version v0.5.5 has been released, delivering important security and stability improvements.

The primary focus of this update is on security fixes, which include:

- A fix in the execution of the message handler (msgHandler).
- A correction in the acknowledgement (ack) sequence to ensure proper communication.
- Improved resiliency by preventing an error when a validator is not found during filtering, which makes the node more stable.

Additionally, the release updates the kurtosis-pos dependency.

Release Notes

## Description

This release contains some security fixes.

## What's Changed
* chore: bump kurtosis-pos by @kamuikatsurgi in https://github.com/0xPolygon/heimdall-v2/pull/522
* app, checkpoint: sec fixes by @marcello33 in https://github.com/0xPolygon/heimdall-v2/pull/525
* merge develop by @marcello33 in https://github.com/0xPolygon/heimdall-v2/pull/526


**Full Changelog**: https://github.com/0xPolygon/heimdall-v2/compare/v0.5.4...v0.5.5

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