CyberRota Analysis
AI-GeneratedDiscourse prior to specified versions is vulnerable to HTML injection due to improper handling of attribute values in the PrettyText.format_for_email function, allowing crafted inputs to be interpreted as HTML. This could lead to unauthorized content rendering and potential cross-site scripting (XSS) attacks. Organizations using affected versions should prioritize updating to the latest releases to mitigate these risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_email because cooked attribute values are reparsed as markup. Crafted Vimeo iframe sources, secure-upload URLs or dimensions, and hashtag data-slug values can cause decoded attribute text to be reinterpreted as HTML. The vulnerable conversion also fails to strictly validate the Vimeo iframe host and path, allowing non-Vimeo allowlisted iframes to be converted. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1.