CVE-2025-64764

Astro is vulnerable to Reflected XSS via the server islands feature

CVSS 7.1 HIGHEPSS 0.4%CWE-80

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

Affected products

withastro · astro

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

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