@storybook/addon-essentials provides a curated set of add-ons designed to enhance the Storybook development environment, providing features that streamline the workflow and improve the presentation of UI components. Comparing versions 5.3.20 and 5.3.21, the core functionality remains largely the same, focusing on essential features for Storybook users. Both versions include dependencies like ts-dedent for cleaner template literals, @storybook/api and @storybook/addons for core Storybook integration, @storybook/node-logger for logging, and @storybook/addon-viewport and @storybook/addon-backgrounds to control viewport size and background theming for visual testing and presentation.
Developers using either version can expect a suite of tools to help them manage their Storybook stories effectively. The peer dependencies highlight compatibility with React 16.8.0 or higher, react-is, and Babel Loader 8.0.0 or higher, ensuring that the add-on integrates smoothly with modern React-based projects. The subtle differences between the versions likely involve internal updates or bug fixes within the dependent @storybook/* packages. The key takeaway is that upgrading from 5.3.20 to 5.3.21 should be a seamless process, bringing potential stability improvements and refinements without introducing significant breaking changes for most users. If you're already utilizing the rich features of addon-essentials (viewport control, background theming, and logging), then upgrading to the latest brings latest bug fixes and refinements! This addon is designed to extract the best of Storybook!
All the vulnerabilities related to the version 5.3.21 of the package
Cross site scripting in markdown-to-jsx
Versions of the package markdown-to-jsx before 7.4.0 are vulnerable to Cross-site Scripting (XSS) via the src property due to improper input sanitization. An attacker can execute arbitrary code by injecting a malicious iframe element in the markdown.
ReDOS vulnerabities: multiple grammars
The Regular expression Denial of Service (ReDoS) is a Denial of Service attack, that exploits the fact that most Regular Expression implementations may reach extreme situations that cause them to work very slowly (exponentially related to input size). An attacker can then cause a program using a Regular Expression to enter these extreme situations and then hang for a very long time.
If are you are using Highlight.js to highlight user-provided data you are possibly vulnerable. On the client-side (in a browser or Electron environment) risks could include lengthy freezes or crashes... On the server-side infinite freezes could occur... effectively preventing users from accessing your app or service (ie, Denial of Service).
This is an issue with grammars shipped with the parser (and potentially 3rd party grammars also), not the parser itself. If you are using Highlight.js with any of the following grammars you are vulnerable. If you are using highlightAuto to detect the language (and have any of these grammars registered) you are vulnerable. Exponential grammars (C, Perl, JavaScript) are auto-registered when using the common grammar subset/library require('highlight.js/lib/common') as of 10.4.0 - see https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.4.0/build/highlight.js
All versions prior to 10.4.1 are vulnerable, including version 9.18.5.
Grammars with exponential backtracking issues:
And of course any aliases of those languages have the same issue. ie: hpp is no safer than cpp.
Grammars with polynomial backtracking issues:
And again: any aliases of those languages have the same issue. ie: ruby and rb share the same ruby issues.
If you have any questions or comments about this advisory:
