CVE-2022-21222
CVSS v3
7.5
HIGH
EPSS Score
1.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The package css-what before 2.1.3 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the usage of insecure regular expression in the re_attr variable of index.js. The exploitation of this vulnerability could be triggered via the parse function.
Technical details
- Published
- 2022-09-30
Frequently asked questions
What is CVE-2022-21222?
The package css-what before 2.1.3 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the usage of insecure regular expression in the re_attr variable of index.js. The exploitation of this vulnerability could be triggered via the parse function.
Is CVE-2022-21222 actively exploited?
Active exploitation of CVE-2022-21222 has not been confirmed. Its EPSS score was 1.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2022-21222?
CVE-2022-21222 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2022-21222 affecting your environment?
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