CVE-2025-53624 Scanner

The Docusaurus Gists Plugin is widely used in web projects to integrate GitHub gists into Docusaurus-based documentation sites. Software developers and organizations employ this plugin to enrich their documentation with code examples directly from GitHub. It simplifies the process of displaying dynamic code snippets within websites. By leveraging the GitHub API, it allows users to seamlessly fetch and display gists on their sites. However, the integration can expose sensitive information if not properly managed. The goal of using this plugin is to enhance the interactivity and utility of documentation pages with minimal manual processes involved.

The vulnerability pertains to an exposure of GitHub Personal Access Tokens through the Docusaurus Gists Plugin. Versions of the plugin prior to 4.0.0 inadvertently include these tokens in client-side JavaScript bundles. This exposure can occur when tokens meant solely for server-side build processes are not properly segmented from the client-side code. The disclosed tokens can provide unauthorized actors access to private repositories. It's a critical security oversight that needs immediate attention to avoid potential security breaches.

The vulnerability specifically affects how configurations are handled in the Docusaurus Gists Plugin. When a Personal Access Token is used within the plugin's configuration, it can end up exposed in the JavaScript files served to users. The script tags within the page's HTML load these JS files, which may inadvertently contain sensitive token information. Hackers can easily scrape these tokens by examining the site's source code, leading to unauthorized GitHub API access. This represents a significant security risk for any sites that have adopted this plugin without updating past version 4.0.0.

If exploited, this vulnerability could lead to severe consequences for the affected parties. The malicious actors, once in possession of the Personal Access Token, could gain unwarranted access to private GitHub repositories. This could result in data exfiltration, unauthorized modifications to existing codebases, and potential insertion of malicious code. Furthermore, it could facilitate broader supply chain attacks if the compromised repositories are used in production environments. Quick remediation is essential to mitigate these potential risks.

REFERENCES

• https://github.com/webbertakken/docusaurus-plugin-content-gists/commit/8d4230b82412edb215ddfa9e609d178510a5fe31
• https://github.com/webbertakken/docusaurus-plugin-content-gists/security/advisories/GHSA-qf34-qpr4-5pph
• https://nvd.nist.gov/vuln/detail/CVE-2025-53624