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  5. CVE-2022-23647

CVE-2022-23647: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

February 18, 2022 (updated February 28, 2022)

Prism is a syntax highlighting library. Starting with version 1.14.0 and prior to version 1.27.0, Prism’s command line plugin can be used by attackers to achieve a cross-site scripting attack. The command line plugin does not properly escape its output, leading to the input text being inserted into the DOM as HTML code. Server-side usage of Prism is not impacted. Websites that do not use the Command Line plugin are also not impacted. This bug has been fixed in v1.27.0. As a workaround, do not use the command line plugin on untrusted inputs, or sanitize all code blocks (remove all HTML code text) from all code blocks that use the command line plugin.

References

  • github.com/PrismJS/prism/commit/e002e78c343154e1c0ddf9d6a0bb85689e1a5c7c
  • github.com/PrismJS/prism/pull/3341
  • github.com/PrismJS/prism/security/advisories/GHSA-3949-f494-cm99
  • github.com/advisories/GHSA-3949-f494-cm99
  • nvd.nist.gov/vuln/detail/CVE-2022-23647

Code Behaviors & Features

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Affected versions

All versions starting from 1.14.0 before 1.27.0

Fixed versions

  • 1.27.0

Solution

Upgrade to version 1.27.0 or above.

Impact 6.1 MEDIUM

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

Learn more about CVSS

Weakness

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

Source file

npm/prismjs/CVE-2022-23647.yml

Spotted a mistake? Edit the file on GitLab.

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