Cross-Site Scripting in Prism (GHSA-wvhm-4hhf-97x9)

Description

The easing preview of the Previewers plugin has an XSS vulnerability that allows attackers to execute arbitrary code in Safari and Internet Explorer.

This impacts all Safari and Internet Explorer users of Prism >=v1.1.0 that use the Previewers plugin (>=v1.10.0) or the Previewer: Easing plugin (v1.1.0 to v1.9.0).

Recommendation

Update the prismjs package to the latest compatible version. Followings are version details:

• Affected version(s): >= 1.1.0, < 1.21.0
• Patched version(s): 1.21.0

References

• GHSA-wvhm-4hhf-97x9
• prismjs.com
• CVE-2020-15138
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Prototype Pollution in lodash (GHSA-jf85-cpcp-j695) - CVE-2019-10744
• PrismJS DOM Clobbering vulnerability - CVE-2024-53382
• jquery-validation vulnerable to Cross-site Scripting - CVE-2025-3573
• @mozilla/readability Denial of Service through Regex - CVE-2025-2792

Tags:

npm

prismjs