Semaphore 5.8.1
- Last Updated: May 29, 2026
- 1 minute read
- Semaphore
- Documentation
Semaphore 5.8.1 is a minor bugfix update to the software and an update to the Semaphore 5.8.0 release.
Important: We scan the Semaphore binaries daily for reported vulnerabilities. For a list of current reported issues and our proposed action, see CVE issues.
Refer to Semaphore-v5.8-4.Mar.2024.pdf for the bill of materials.
Installation Prerequisites
Prior to installing or upgrading to this version of Semaphore please be sure to review the Third-party software requirements (Linux) or Third-party software requirements (Windows) information as well as the general Plan your Semaphore Installation (Linux) or Plan your Semaphore Installation (Windows) information for installation server requirements.
Model Management
New Functionality
None
Issues Resolved
- 18338, 18949, 19650 Bug fixes related to metadata on relationship creation and modification
- 18448 Speed up KMM home page by not locking on permission request
- 18621 Allow use of Japanese text in DA interface
- 18901 Fix intermittent issue when creating new models
- 19657 Error editing domain and range on newly created metadata types
Classification Server and Document and Text Analysis
Important: The Document and Text Analysis component will only function correctly, if the Classification and Language Server is installed with the separate language packs.
Issues Resolved
- 19296 Fix issue with Classification Server using Text Mining rulebases
Semantic Enhancement Server
Issues Resolved
- 19427 Ensure that SES REST requests function correctly even when a language code is presented as part of the path
Concepts Server
Issues Resolved
- 19020 Sort issues with using Graphql interface within the Concepts Server application when not at root level of the application
Facts Extraction
Issues Resolved
None