Vulnerability Details : 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.
Vulnerability category: Denial of service
Products affected by CVE-2022-31103
- cpe:2.3:a:lettersanitizer_project:lettersanitizer:*:*:*:*:*:node.js:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-31103
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-31103
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2022-31103
-
The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.Assigned by: security-advisories@github.com (Primary)
References for CVE-2022-31103
-
https://github.com/mat-sz/lettersanitizer/commit/96d3dfe2ef0465d47324ed4d13e91ba0816a173f
filter out unsupported at-rules · mat-sz/lettersanitizer@96d3dfe · GitHubPatch;Third Party Advisory
-
https://github.com/mat-sz/lettersanitizer/security/advisories/GHSA-7r3r-gq8p-v9jj
Improper handling of CSS at-rules in lettersanitizer · Advisory · mat-sz/lettersanitizer · GitHubThird Party Advisory
-
https://github.com/mat-sz/react-letter/issues/17
100% cpu cost and lagging · Issue #17 · mat-sz/react-letter · GitHubIssue Tracking;Third Party Advisory
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