CoreUI v5.4.3
Monday, September 1, 2025

We’re excited to announce the release of CoreUI v5.4.3 — an important update that enhances accessibility compliance, fixes UI issues, and includes comprehensive dependency updates including Bootstrap 5.3.8.
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How to Update
To upgrade your project to CoreUI v5.4.3:
- Open your
package.json
. - Update the
@coreui/coreui
version to5.4.3
. - Save the file and run the install command:
- npm:
npm install
- yarn:
yarn install
- npm:
What’s New
🛠️ Fixes & Improvements
-
Accessibility: Fixed
color-contrast()
function for WCAG 2.1 compliance- Enhanced color contrast calculations for better accessibility
- Ensures compliance with Web Content Accessibility Guidelines 2.1
- Improved readability for users with visual impairments
-
Spinner Component: Fixed spinner deformation in flex boxes with multiline content
- Resolved visual distortion issues when spinners are placed in complex layouts
- Improved rendering consistency across different container types
- Better support for responsive design patterns
Dependency Updates
This release includes comprehensive dependency updates for improved performance, security, and compatibility:
Core Dependencies
- Updated
bootstrap
from^5.3.7
to^5.3.8
Development Tools
- Updated
@eslint/markdown
from^7.1.0
to^7.2.0
- Updated
eslint
from^9.33.0
to^9.34.0
- Updated
eslint-config-xo
from0.48.0
to0.49.0
- Updated
hugo-bin
from^0.145.2
to^0.146.0
- Updated
jasmine
from^5.9.0
to^5.10.0
- Updated
rollup
from^4.46.2
to^4.50.0
- Updated
sass-embedded
from^1.90.0
to^1.91.0
Technical Details
WCAG 2.1 Color Contrast
The improved color-contrast()
function provides:
- More accurate contrast ratio calculations
- Better support for different color formats
- Enhanced accessibility testing capabilities
- Compliance with modern accessibility standards
Spinner Fixes
The spinner component improvements address:
- Deformation issues in flex containers with
flex-wrap: wrap
- Better handling of multiline content scenarios
- Improved CSS specificity for consistent rendering
- Enhanced cross-browser compatibility
Bootstrap 5.3.8 Integration
The Bootstrap update brings:
- Latest security patches and bug fixes
- Improved component stability
- Enhanced performance optimizations
- Better cross-browser support
For a complete list of all changes, check out the full changelog on GitHub.