Vulnerability in Lettersanitizer Project

CVE-2022-31103

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.

EPSS: 0.014 (70.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-31103?
CVE-2022-31103 is a high-severity vulnerability in Lettersanitizer Project, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.5/10. Published 2022-06-27.
How severe is CVE-2022-31103?
High severity. CVSS v3 base score is 7.5 out of 10.