CVE-2025-64764 HIGH

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

Vendor Withastro
Product astro
Weakness CWE-80 · XSS · basic
Published November 19, 2025
Last update November 19, 2025
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 19, 2025 CVE published
November 19, 2025 Record updated