CVE-2025-64764

Name: CVE-2025-64764
Creator: NVD / NIST
Published: 2025-11-19T17:15:52.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2025-64764 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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). EPSS estimates a 0.45% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.45%

35.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-80

Affected Software

Vendor	Product	Versions
Astro	Astro	< 5.15.8

References

https://github.com/withastro/astro/commit/790d9425f39bbbb462f1c27615781cd965009f91Patch
https://github.com/withastro/astro/security/advisories/GHSA-wrwg-2hg8-v723Exploit, Vendor Advisory

Timeline

Published: Nov 19, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-64764?

How severe is CVE-2025-64764?

CVE-2025-64764 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2025-64764?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-64764?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST