CyberRota Analysis
AI-GeneratedVersions of the Astro web framework prior to 7.0.6 are vulnerable to cross-site scripting (XSS) due to unescaped spread attribute names in the renderHTMLElement function. This vulnerability allows untrusted property keys to escape the attribute context, potentially leading to malicious code execution. Developers and organizations using affected versions should prioritize upgrading to 7.0.6 to mitigate the risk of XSS attacks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Astro is a web framework for content-driven websites. Versions prior to 7.0.6 are vulnerable to XSS through unescaped spread attribute names in renderHTMLElement. The fix for CVE-2026-54298 (GHSA-jrpj-wcv7-9fh9) added an INVALID_ATTR_NAME_CHAR guard to addAttribute() so that spread-prop attribute names containing "' >/= or whitespace are dropped. A second attribute-rendering path, renderHTMLElement() in packages/astro/src/runtime/server/render/dom.ts, has its own inline attribute loop that does not go through addAttribute() and was not updated. It interpolates the attribute name unescaped and only escapes the value, so untrusted prop keys spread onto a native-HTMLElement-subclass component can still break out of the attribute context. This issue has been fixed in version 7.0.6.