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What's New for Semaphore

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Semaphore 5.10.6

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  • Last Updated: August 14, 2026
  • 2 minute read
    • Semaphore
    • Documentation

Semaphore 5.10.6 is an innovation release of the software. It provides users with the ability to explore new functionality as it is added to the Semaphore platform outside the normal long-term support releases.

Refer to semaphore-v5.10.6-13.august.2026.txt for the bill of materials.

Installation Prerequisites

Important: Starting with Semaphore 5.10.6, the minimum supported Java version is Java 21.

Before installing or upgrading to this version of Semaphore, review the following:

For general information:

For installation server requirements:

Model Management

Issues Resolved

  • 28802—The Clear changes on master setting could not be switched off after it had been enabled.
  • 29316—Inconsistent behavior when exposing metadata properties on resources prevented exposed properties from being disabled and re-enabled correctly.
  • 30223—Tracking the operation status of long-running Concept Scheme deletions could cause users to lose their session.
  • 30860—A SHACL validation pattern intended to accept only digits accepted only a single digit.

Knowledge Model Manager

Issues Resolved

  • 37372—Expired licenses could not be deleted in certain scenarios.

Concepts Server

New Functionality

  • 36547—Concepts Server API documentation now specifies formats used for structured data returned as strings, including date-time values.
  • 37461—Expanded Concepts Server API documentation to describe response fields, including data type, nullability, and purpose.

Issues Resolved

  • 37458—Date-time formats were inconsistent between Semaphore and Concepts Server.

Configuration

Issues Resolved

  • 37633—Default configuration files were not restored when the model configuration directory was empty.

Classification Server

Issues Resolved

  • 37670—A crash could occur on certain JVM versions when many language packs were installed.

Others

Changes

  • 37967—The Integrations component is no longer included in the Semaphore distribution.
  • 37968—The obsolete Smartlogic-visualization-1.6.14-5.10.6.3.tgz archive is no longer included in the Semaphore distribution.

Vulnerabilities

List of fixed vulnerabilities

Alert