CVE-2025-64764: Astro

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Astro Astro: before 5.15.8 (fixed in 5.15.8)

Published 2025-11-19. Last modified 2026-06-17.