What is CVE-2021-23382?

CVE-2021-23382 is a medium-severity vulnerability in Postcss, classified under Inefficient Regular Expression Complexity. CVSS score: 5.3/10. Published 2021-04-26.

How severe is CVE-2021-23382?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-23382 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Postcss

CVE-2021-23382

The package postcss before 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 \/\*\s* source…

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.025 (83.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Postcss
N/a Postcss — versions unspecified

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

Public proof-of-concept exploits

References

report@snyk.io (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
report@snyk.io (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
report@snyk.io (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-23382?: CVE-2021-23382 is a medium-severity vulnerability in Postcss, classified under Inefficient Regular Expression Complexity. CVSS score: 5.3/10. Published 2021-04-26.
How severe is CVE-2021-23382?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-23382 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.