DOM Clobbering Gadget found in astro's client-side router that leads to XSS

Description

A DOM Clobbering gadget has been discoverd in Astro’s client-side router. It can lead to cross-site scripting (XSS) in websites enables Astro’s client-side routing and has stored attacker-controlled scriptless HTML elements (i.e., iframe tags with unsanitized name attributes) on the destination pages.

Recommendation

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

• Affected version(s): >= 3.0.0, < 4.16.1
• Patched version(s): 4.16.1

References

• GHSA-m85w-3h95-hcf9
• CVE-2024-47885
• 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
• Astro allows unauthorized third-party images in _image endpoint - CVE-2025-55303
• Astros's duplicate trailing slash feature leads to an open redirection security issue - CVE-2025-54793

Tags:

npm

astro