Cross-site Scripting in Prism
Description
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 did 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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
prismjsnpm | >= 1.14.0, < 1.27.0 | 1.27.0 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-3949-f494-cm99ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2022-23647ghsaADVISORY
- github.com/PrismJS/prism/commit/e002e78c343154e1c0ddf9d6a0bb85689e1a5c7cghsax_refsource_MISCWEB
- github.com/PrismJS/prism/pull/3341ghsax_refsource_MISCWEB
- github.com/PrismJS/prism/security/advisories/GHSA-3949-f494-cm99ghsax_refsource_CONFIRMWEB
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