Astro allows unauthorized third-party images in _image endpoint

Description

In affected versions of astro, the image optimization endpoint in projects deployed with on-demand rendering allows images from unauthorized third-party domains to be served.

Recommendation

Update the astro package to the latest compatible version. Followings are version details:

• Affected version(s): **>= 5.0.0-alpha.0, < 5.13.2

  <= 4.16.18**

• Patched version(s): **5.13.2

  4.16.19**

References

• GHSA-xf8x-j4p2-f749
• CVE-2025-55303
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Astro Cloudflare adapter has Stored Cross-site Scripting vulnerability in /_image endpoint - CVE-2025-65019
• Astro development server error page is vulnerable to reflected Cross-site Scripting - CVE-2025-64745
• Astros's duplicate trailing slash feature leads to an open redirection security issue - CVE-2025-54793
• Astro's server source code is exposed to the public if sourcemaps are enabled - CVE-2024-56159

Tags:

npm

astro