Improper handling of CSS at-rules in lettersanitizer

高 7.5CVE-2022-31103 · GHSA-7r3r-gq8p-v9jj · 27/06/2022 公開 · 17/06/2026 更新

要点

CVE-2022-31103 は lettersanitizer (lettersanitizer project), lettersanitizer に影響する深刻度「高」 (CVSS 7.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：1.5%（全脆弱性の 74.8% より高い）。
対処：1.0.2 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
lettersanitizer lettersanitizer_project	`< 1.0.2`	`1.0.2`
lettersanitizer npm	`< 1.0.2`	`1.0.2`

概要

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, 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
Email me at [email protected]

NVD の説明

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.