@storybook/addon-essentials is a collection of essential Storybook addons designed to enhance the development and documentation workflow for UI components. Version 5.3.4 was released on January 16, 2020, shortly after version 5.3.3, which was released on January 14, 2020.
While the core functionality and dependencies remain largely consistent between the two versions, with shared dependencies like ts-dedent, @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds, the key difference lies in internal updates and bug fixes. Both versions maintain the same peer dependencies, requiring react, react-is, and babel-loader for compatibility with existing projects.
For developers, upgrading from 5.3.3 to 5.3.4 ensures access to the latest improvements and patches within the addon-essentials package. Although the surface-level changes might seem minimal, these iterative updates often include crucial stability improvements and refinements, leading to a smoother development experience. Developers already using Storybook and the essentials addon should consider updating to benefit from these subtle but impactful enhancements. Using the latest version helps maintain compatibility with other Storybook packages and reduces the risk of encountering known issues addressed in the newer release, thus optimizing their Storybook setup.
All the vulnerabilities related to the version 5.3.4 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:
