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Vulnerability record · CVE-2022-23647 · published 18 February 2022

CVE-2022-23647: Prismjs prism cross-site scripting vulnerability

PPrismjs · Prism

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.

6.1 CVSS 3.1 Medium EPSS 1.5% · top 27.1% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/PrismJS/prism/commit/e002e78c343154e1c0ddf9d6a0bb85689e1a5c7c PatchThird Party Advisory
https://github.com/PrismJS/prism/pull/3341 PatchThird Party Advisory
https://github.com/PrismJS/prism/security/advisories/GHSA-3949-f494-cm99 Third Party Advisory
https://github.com/PrismJS/prism/commit/e002e78c343154e1c0ddf9d6a0bb85689e1a5c7c PatchThird Party Advisory
https://github.com/PrismJS/prism/pull/3341 PatchThird Party Advisory
https://github.com/PrismJS/prism/security/advisories/GHSA-3949-f494-cm99 Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-23647), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.