CVE-2022-21670 describes a denial-of-service vulnerability in markdown-it, a Markdown parser, affecting versions prior to 12.3.2. Specially crafted, long patterns (over 50,000 characters) can significantly degrade parser performance. With a CVSS score of 5.3 (Medium), this vulnerability can be exploited remotely with low attack complexity, leading to a low impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 12.3.1CPE matchmatch criteria | cpe:2.3:a:markdown-it_project:markdown-it:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.