CVE-2022-31103CWE-754

Improper handling of CSS at-rules in lettersanitizer

High · published June 27, 2022

CVSS v3.1
7.5
EPSS
1%
Percentile
73.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01490 · 73.9th percentile
Weakness
CWE-754 · Improper Check for Unusual or Exceptional Conditions
Published
2022-06-27T22:20Z
EPSS history
Timeline
  • 27 JUN 22:20Z
    Improper handling of CSS at-rules in lettersanitizer
    cvelistv5