Is CVE-2020-4038 in the CISA KEV catalog?

No. CVE-2020-4038 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-4038?

CVE-2020-4038 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2020-4038?

CVE-2020-4038 has an EPSS score of 7.24% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-4038?

Upgrade graphql-playground-html to 1.6.22 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2020-4038

HIGHEPSS 94th pctl

7.4

CVSS v3

NVD

Description

GraphQL Playground (graphql-playground-html NPM package) before version 1.6.22 have a severe XSS Reflection attack vulnerability. All unsanitized user input passed into renderPlaygroundPage() method could trigger this vulnerability. This has been patched in graphql-playground-html version 1.6.22. Note that some of the associated dependent middleware packages are also affected including but not limited to graphql-playground-middleware-express before version 1.7.16, graphql-playground-middleware-koa before version 1.6.15, graphql-playground-middleware-lambda before version 1.7.17, and graphql-playground-middleware-hapi before 1.6.13.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

graphql-playground-htmlNVD

Affected:< 1.6.22Fixed in:1.6.22CVE-2020-4038derived from NVD

graphql-playground-middleware-expressNVD

Affected:< 1.7.16Fixed in:1.7.16CVE-2020-4038derived from NVD

graphql-playground-middleware-hapiNVD

Affected:< 1.6.13Fixed in:1.6.13CVE-2020-4038derived from NVD

graphql-playground-middleware-koaNVD

Affected:< 1.6.15Fixed in:1.6.15CVE-2020-4038derived from NVD

graphql-playground-middleware-lambdaNVD

Affected:< 1.7.17Fixed in:1.7.17CVE-2020-4038derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

7.24%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Patch1

github.com

Mitigation1

github.com

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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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.