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CVE-2025-64764

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Date: November 19, 2025

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.

Severity Score

Related Resources (5)

https://github.com/withastro/astro/commit/790d9425f39bbbb462f1c27615781cd965009f91
https://nvd.nist.gov/vuln/detail/CVE-2025-64764
https://github.com/withastro/astro/security/advisories/GHSA-wrwg-2hg8-v723
https://github.com/withastro/astro
https://www.mend.io/vulnerability-database/CVE-2025-64764

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

CWE-80

Top Fix

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Upgrade Version

Upgrade to version astro - 5.15.8;https://github.com/withastro/astro.git - astro@5.15.8

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): HIGH
Availability (A): NONE

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