phoenix_html allows Cross-site Scripting in HEEx class attributes

Description

tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in HEEx class attributes

Recommendation

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

• Affected version(s): < 3.0.4
• Patched version(s): 3.0.4

References

• GHSA-5g2h-9x5v-5h3x
• CVE-2021-46871
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Solid Lacks Escaping of HTML in JSX Fragments allows for Cross-Site Scripting (XSS) - CVE-2025-27109
• Cross-site Scripting in quill - CVE-2021-3163
• Docsify vulnerable to cross-site scripting due to mishandled encoding - CVE-2021-30074
• Cross-site Scripting in Froala Editor - froala-editor - CVE-2021-30109

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How to Secure your NodeJs Express Javascript Application - part 1

How to Secure your NodeJs Express Javascript Application - part 2

10 Secure Coding Best Practices to Follow in Every Project

Tags:

npm

phoenix_html