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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-37700 Detail

Description

@github/paste-markdown is an npm package for pasting markdown objects. A self Cross-Site Scripting vulnerability exists in the @github/paste-markdown before version 0.3.4. If the clipboard data contains the string `<table>`, a **div** is dynamically created, and the clipboard content is copied into its **innerHTML** property without any sanitization, resulting in improper execution of JavaScript in the browser of the victim (the user who pasted the code). Users directed to copy text from a malicious website and paste it into pages that utilize this library are affected. This is fixed in version 0.3.4. Refer the to the referenced GitHub Advisory for more details including an example exploit.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/github/paste-markdown/commit/32b7ea3f29ae8f256f9d19768387be42678ddf30 Patch  Third Party Advisory 
https://github.com/github/paste-markdown/commit/32b7ea3f29ae8f256f9d19768387be42678ddf30 Patch  Third Party Advisory 
https://github.com/github/paste-markdown/releases/tag/v0.3.4 Release Notes  Third Party Advisory 
https://github.com/github/paste-markdown/releases/tag/v0.3.4 Release Notes  Third Party Advisory 
https://github.com/github/paste-markdown/security/advisories/GHSA-gpfj-4j6g-c4w9 Exploit  Third Party Advisory 
https://github.com/github/paste-markdown/security/advisories/GHSA-gpfj-4j6g-c4w9 Exploit  Third Party Advisory 
https://www.npmjs.com/package/%40github/paste-markdown
https://www.npmjs.com/package/%40github/paste-markdown

Weakness Enumeration

CWE-ID CWE Name Source
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-37700
NVD Published Date:
08/12/2021
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.