Headline
CVE-2022-31103: 100% cpu cost and lagging · Issue #17 · mat-sz/react-letter
lettersanitizer is a DOM-based HTML email sanitizer for in-browser email rendering. All versions of lettersanitizer below 1.0.2 are affected by a denial of service issue when processing a CSS at-rule @keyframes. This package is depended on by react-letter, therefore everyone using react-letter is also at risk. The problem has been patched in version 1.0.2.
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### Impact All versions of lettersanitizer below 1.0.2 are affected by a denial of service issue when processing a CSS at-rule `@keyframes`. This package is depended on by [react-letter](https://github.com/mat-sz/react-letter), therefore everyone using react-letter is also at risk. ### Patches The problem has been patched in version 1.0.2. ### Workarounds There is no workaround besides upgrading. ### References The issue was originally reported in the react-letter repository: https://github.com/mat-sz/react-letter/issues/17 ### For more information If you have any questions or comments about this advisory: * Open an issue in [lettersanitizer](https://github.com/mat-sz/lettersanitizer/issues) * Email me at [[email protected]](mailto:[email protected])