> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-integrate-ext-signing-overview.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 3.5.18

> Canton 3.5.18 release notes.

# Release of Canton 3.5.18

Canton 3.5.18 has been released on September 17, 2026.

## Summary

This is a maintenace release that brings improvements to CantonBFT, LSU, and other minor improvements.

## What’s New

### CantonBFT

* Batch fetching: retry patience defaults are now shorter to avoid long delays in case a batch is not retrieved timely.
* Improved flow control defaults to avoid slowing down catch-up.
* Fixed spurious "Detected identity equivocation when trying to associate P2P endpoint" warnings and `security.noncompliant` metric marks: a P2P endpoint pointing back to the node itself (a misconfiguration) is now reported as such, without marking a security violation, and its connection is shut down instead of being retried indefinitely.
* Improved performance during catch-up by making batch validation asynchronous
* Multicasted messages are now only serialized once in total, rather than once per peer (per message)

### LSU

* Ensure a node can process announcement for an LSU to protocol version 36. This fixes a bug that makes the node unable to process an LSU announcement with target synchronizer on protocol
  version 36.
* Topology purging is now enabled by default to reduce storage duplication after LSUs.

### Minor Improvements

* Added runbook for reinitializing commitments to a recent point in time without reading or processing past changes.
* Bumped the da-base-image docker image to 1.0.14 to address security vulnerabilities in grpc health probe.

## Compatibility

The following Canton protocol versions are supported:

| Dependency               | Version |
| ------------------------ | ------- |
| Canton protocol versions | 34, 35  |

Canton has been tested against the following versions of its dependencies:

| Dependency   | Version                                                                                                                                                                                                                                             |
| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Java Runtime | OpenJDK 64-Bit Server VM (build 21.0.12+2-nixos, mixed mode, sharing)                                                                                                                                                                               |
| Postgres     | Recommended: PostgreSQL 17.10 (Debian 17.10-1.pgdg13+1) – Also tested: PostgreSQL 14.24 (Debian 14.24-1.pgdg13+2), PostgreSQL 15.19 (Debian 15.19-1.pgdg13+2), PostgreSQL 16.15 (Debian 16.15-1.pgdg13+2), PostgreSQL 18.6 (Debian 18.6-1.pgdg13+2) |