Regular Expression Denial of Service in postcss

Description

The package postcss versions before 7.0.36 or between 8.0.0 and 8.2.13 are vulnerable to Regular Expression Denial of Service (ReDoS) via getAnnotationURL() and loadAnnotation() in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern

Recommendation

Update the postcss package to the latest compatible version. Followings are version details:

• Affected version(s): **< 7.0.36

  >= 8.0.0, < 8.2.13**

• Patched version(s): **7.0.36

  8.2.13**

References

• GHSA-566m-qj78-rww5
• snyk.io
• CVE-2021-23382
• CWE-400
• CAPEC-310
• OWASP 2021-A6