Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-4038

21
FAUCET Score

CVE-2020-4038 describes a severe reflected Cross-Site Scripting (XSS) vulnerability in GraphQL Playground (graphql-playground-html NPM package prior to version 1.6.22) and its associated middleware packages. This vulnerability allows unsanitized user input passed to the renderPlaygroundPage() method to execute malicious scripts. With a CVSS score of 7.4 (High), this flaw can be exploited remotely with low attack complexity, requiring user interaction to achieve high integrity impact, though confidentiality and availability are not directly affected. While there is no evidence of active exploitation, public exploit code, or significant community discussion, affected organizations should prioritize patching to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.6.22CPE matchmatch criteria
cpe:2.3:a:prisma:graphql-playground-html:*:*:*:*:*:node.js:*:*
< 1.7.16CPE matchmatch criteria
cpe:2.3:a:prisma:graphql-playground-middleware-express:*:*:*:*:*:node.js:*:*
< 1.6.13CPE matchmatch criteria
cpe:2.3:a:prisma:graphql-playground-middleware-hapi:*:*:*:*:*:node.js:*:*
< 1.6.15CPE matchmatch criteria
cpe:2.3:a:prisma:graphql-playground-middleware-koa:*:*:*:*:*:node.js:*:*
< 1.7.17CPE matchmatch criteria
cpe:2.3:a:prisma:graphql-playground-middleware-lambda:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.4HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.24%
Probability of exploitation in next 30 days
EPSS Percentile
93.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0724 is in the 93rd percentile among its peer group of 14,824 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: graphql-playground-htmlFixed in: 1.6.22

Vendor Advisories (1)

npmGHSA-4852-vrh7-28rfhigh

Reflected XSS in GraphQL Playground

Jun 9, 2020

References

github.com / prisma-labs/graphql-playground/commit/bf1883db538c97b076801a60677733816cb3cfb7
PatchThird Party Advisory
github.com / prisma-labs/graphql-playground/security/advisories/GHSA-4852-vrh7-28rf
MitigationThird Party Advisory
github.com / prisma-labs/graphql-playground
Third Party Advisory