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CVE-2025-64764 PoC — Astro is vulnerable to Reflected XSS via the server islands feature

Source
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-64764.yaml
Associated Vulnerability
Title: Astro is vulnerable to Reflected XSS via the server islands feature (CVE-2025-64764)
Description:Astro is a web framework. Prior to version 5.15.8, a reflected XSS vulnerability is present when the server islands feature is used in the targeted application, regardless of what was intended by the component template(s). This issue has been patched in version 5.15.8.
Description
Astro 5.15.8 contains a reflected XSS caused by improper handling of server islands feature, letting remote attackers execute scripts, exploit requires use of server islands in the application.
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