Astro framework vulnerabilities
3 known CVE vulnerabilities in Astro framework, translated and rated.
- CVE-2026-54299High
Astro is a web framework that prior to version 6.4.6 had an issue with SSR apps using prerendered error pages. When an error occurred, these pages were fetched over HTTP, allowing an attacker to direct the request to an arbitrary host.
- CVE-2026-54298Medium
In versions prior to 6.4.6 of the Astro framework, the spreadAttributes function in the server-side rendering pipeline did not sanitize object keys against injection, allowing attackers to add arbitrary HTML attributes, including event handlers.
- CVE-2026-50146High
Astro is a web framework that prior to version 6.3.3 had a vulnerability where components using the client:* directive inserted slot content into a data-astro-template attribute without proper escaping, allowing an attacker to inject arbitrary HTML and leading to reflected XSS during SSR.

