Is CVE-2021-33587 in the CISA KEV catalog?

No. CVE-2021-33587 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33587?

CVE-2021-33587 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-33587?

CVE-2021-33587 has an EPSS score of 2.27% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33587?

Upgrade node-css-what on debian 11 to 4.0.0-3+deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-33587

HIGHEPSS 81th pctl

7.5

CVSS v3

NVD

Description

The css-what package 4.0.0 through 5.0.0 for Node.js does not ensure that attribute parsing has Linear Time Complexity relative to the size of the input.

How to fix

Remediation Available

node-css-whatDebian

Fixed in:4.0.0-3+deb11u1CVE-2021-33587

Fixed in:5.0.1-1CVE-2021-33587

node-css-whatUbuntu

Fixed in:2.1.0-1ubuntu0.16.04.1~esm1USN-6065-1

Fixed in:2.1.0-1+deb10u1build0.18.04.1USN-6065-1

Fixed in:3.2.1-1ubuntu0.1~esm1USN-6065-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.27%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

security.netapp.com

Other references1

lists.debian.org

Embed a live status badge for CVE-2021-33587

Markdown

[![CVE-2021-33587](https://tridentstack.com/cve/badge/CVE-2021-33587.svg)](https://tridentstack.com/cve/CVE-2021-33587)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-33587"><img src="https://tridentstack.com/cve/badge/CVE-2021-33587.svg" alt="CVE-2021-33587"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.