Cross-site scripting in graphql-playground package for npm



Published: 2020-06-15
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-4038
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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graphql-playground
Web applications / Modules and components for CMS

Vendor Prisma Labs

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU29012

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-4038

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the "renderPlaygroundPage()" function. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

graphql-playground: 1.3.5 - 1.6.21

External links

http://github.com/prisma-labs/graphql-playground#security-details
http://github.com/prisma-labs/graphql-playground/commit/bf1883db538c97b076801a60677733816cb3cfb7
http://github.com/prisma-labs/graphql-playground/security/advisories/GHSA-4852-vrh7-28rf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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