Description
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](https://github.com/mat-sz/react-letter), therefore everyone using react-letter is also at risk. The problem has been patched in version 1.0.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mat-sz | lettersanitizer | < 1.0.2 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | lettersanitizer | < 1.0.2 | 1.0.2 | GHSA-7r3r-gq8p-v9jj |