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.
Published: 2022-06-27
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2022-5983 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.
Github GHSA Github GHSA GHSA-7r3r-gq8p-v9jj Improper handling of CSS at-rules in lettersanitizer
History

Wed, 23 Apr 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Lettersanitizer Project Lettersanitizer
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-04-23T18:06:15.856Z

Reserved: 2022-05-18T00:00:00.000Z

Link: CVE-2022-31103

cve-icon Vulnrichment

Updated: 2024-08-03T07:11:39.037Z

cve-icon NVD

Status : Modified

Published: 2022-06-27T23:15:08.170

Modified: 2024-11-21T07:03:54.013

Link: CVE-2022-31103

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses