@storybook/addon-essentials streamlines Storybook configuration by bundling essential addons in a single package. Versions 5.3.5 and 5.3.4, both MIT licensed and intended for use with React (>=16.8.0), react-is (>=16.8.0) and babel-loader (>=8.0.0), provide developers with a suite of tools to enhance their component documentation and development workflow. They share identical development dependencies, relying on @types/jest for testing. Under the hood, both versions bundle ts-dedent for template literal handling and core Storybook utilities such as @storybook/api, @storybook/addons, and @storybook/node-logger. Crucially, they integrate @storybook/addon-viewport for responsive design testing and @storybook/addon-backgrounds for visual customization. The primary distinction lies in the internal versioning of their dependencies. Version 5.3.5 depends on @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds all at version 5.3.5, while version 5.3.4 uses version 5.3.4 of those same packages. For developers, the upgrade from 5.3.4 to 5.3.5 primarily ensures consistency across Storybook's internal packages, potentially including bug fixes or minor feature enhancements within those core utilities. The release dates also highlight a minor update, with 5.3.5 being released approximately 13 hours after 5.3.4. Developers should update to ensure they get the latest fixes.
All the vulnerabilities related to the version 5.3.5 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:
