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CVE-2021-23382

24
FAUCET Score

CVE-2021-23382 is a Regular Expression Denial of Service (ReDoS) vulnerability affecting postcss versions prior to 8.2.13, specifically within the getAnnotationURL() and loadAnnotation() functions in lib/previous-map.js. This vulnerability carries a CVSS score of 7.5 (High), indicating that it can be exploited remotely with low attack complexity, leading to a denial of service. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.0.36CPE matchmatch criteria
cpe:2.3:a:postcss:postcss:*:*:*:*:*:node.js:*:*
>= 8.0.0, < 8.2.13CPE matchmatch criteria
cpe:2.3:a:postcss:postcss:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.51%
Probability of exploitation in next 30 days
EPSS Percentile
83.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0251 is in the 70th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

bitdefenderpatch availablevia llm_extracted
Fixed in: ['8.2.12', '9.0.6', '9.1.1']
View patch
github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: postcssFixed in: 7.0.36
npmpatch availablevia ghsa
Product: postcssFixed in: 8.2.13
redhatpatch availablevia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8:v3.6.0-62
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.8Fixed in: openshift4/ose-console:v4.8.0-202107010336.p0.git.188a490.assembly.stream
View patch
redhatvendor investigatingvia redhat_api
Product: Logging Subsystem for Red Hat OpenShiftFixed in: openshift-logging/kibana6-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: golang-github-prometheus-prometheus
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-grafana
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-logging-kibana6
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-thanos-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: application-ui
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: search-ui
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh-prometheus
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh-grafana
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: grc-ui
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: kibana

Vendor Advisories (3)

bitdefenderllm-bitdefender-2250a01bd7a7224eHIGH

August 2023 Third Party Package Updates in Splunk Enterprise

Aug 30, 2023
npmGHSA-566m-qj78-rww5medium

Regular Expression Denial of Service in postcss

Jan 7, 2022
redhatCVE-2021-23382Moderate

nodejs-postcss: ReDoS via getAnnotationURL() and loadAnnotation() in lib/previous-map.js

Apr 26, 2021

References

github.com / postcss/postcss/commit/2b1d04c867995e55124e0a165b7c6622c1735956
PatchThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641
ExploitPatchThird Party Advisory
snyk.io / vuln/SNYK-JS-POSTCSS-1255640
ExploitPatchThird Party Advisory