## Bootstrap 4.1.0 Contains 4 Vulnerabilities, Including High-Severity 6.1 CVSS Flaw
A widely deployed version of the Bootstrap front-end framework, version 4.1.0, contains multiple unpatched security vulnerabilities, with the most severe scoring 6.1 on the CVSS scale. The vulnerable library file, `bootstrap-4.1.0.min.js`, was identified in a project's base HTML template, indicating its direct integration into a web application's core structure. This discovery highlights a persistent supply chain risk, as outdated but popular dependencies remain embedded in production codebases long after their flaws are known.

The specific vulnerabilities were flagged in a GitHub repository for the project 'service-worker-1571', pinpointing the exact commit and file path where the library is used. Bootstrap is described as "the most popular front-end framework for developing responsive, mobile first projects on the web," making this finding relevant to a vast number of websites and applications. The issue was automatically closed, suggesting it may have been addressed by a bot or dismissed without manual review, a common practice that can leave underlying risks unmitigated.

The presence of these flaws, especially one with a medium-high severity score, creates a tangible attack surface for any application still relying on this version. It signals ongoing pressure on development teams to maintain rigorous dependency audits, as automated tools can identify but not always resolve these issues. For organizations using Bootstrap 4.1.0, this serves as a direct warning to upgrade or apply patches to prevent potential exploitation through client-side code.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: cybersecurity, open-source, vulnerability, supply-chain, web-development
- **Credibility**: unverified
- **Published**: 2026-04-08 09:27:07
- **ID**: 54674
- **URL**: https://whisperx.ai/en/intel/54674