Is CVE-2021-21384 in the CISA KEV catalog?

No. CVE-2021-21384 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21384?

CVE-2021-21384 has a CVSS v3 base score of 6.3 (MEDIUM).

What is the EPSS score for CVE-2021-21384?

CVE-2021-21384 has an EPSS score of 0.57% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21384?

Upgrade shescape to 1.1.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-21384

MEDIUM

6.3

CVSS v3

NVD

Description

shescape is a simple shell escape package for JavaScript. In shescape before version 1.1.3, anyone using _Shescape_ to defend against shell injection may still be vulnerable against shell injection if the attacker manages to insert a into the payload. For an example see the referenced GitHub Security Advisory. The problem has been patched in version 1.1.3. No further changes are required.

CWE-88

How to fix

Remediation Available

shescapeNVD

Affected:< 1.1.3Fixed in:1.1.3CVE-2021-21384derived from NVD

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.57%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Third-Party Advisory1

github.com

Product1

npmjs.com

Related Vulnerabilities

Other CWE-88 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2016-10033	Critical	9.8	100%	KEV	Fix
CVE-2022-36804	High	8.8	99%	KEV	Fix
CVE-2026-24061	Critical	9.8	99%	KEV	Fix
CVE-2007-0882	High	10.0	98%	-	-
CVE-2018-17456	Critical	9.8	97%	-	Fix
CVE-2018-19518	High	7.5	95%	-	Fix

Embed a live status badge for CVE-2021-21384

Markdown

[![CVE-2021-21384](https://tridentstack.com/cve/badge/CVE-2021-21384.svg)](https://tridentstack.com/cve/CVE-2021-21384)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-21384"><img src="https://tridentstack.com/cve/badge/CVE-2021-21384.svg" alt="CVE-2021-21384"></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.