CVE-2025-64764

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.

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWE

CWE-80

Published

2025-11-19

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

Affected

• astro:astro

Packages (OSV)

References

• https://github.com/withastro/astro/commit/790d9425f39bbbb462f1c27615781cd965009f91
• https://github.com/withastro/astro/security/advisories/GHSA-wrwg-2hg8-v723

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