High severity · published Sep 30, 2022
CVE-2022-21222
Regular Expression Denial of Service (ReDoS)
7.5
CVSS
1.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CS
css-what ·
before 2.1.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-21222
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-21222
Broken Link
https://github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js%23L12
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/03/msg00001.html
Exploit
https://security.snyk.io/vuln/SNYK-JS-CSSWHAT-3035488