Vulnerability Description
Astro is a web framework for content-driven websites. In versions 5.2.0 through 5.12.7, there is an Open Redirect vulnerability in the trailing slash redirection logic when handling paths with double slashes. This allows an attacker to redirect users to arbitrary external domains by crafting URLs such as https://mydomain.com//malicious-site.com/. This increases the risk of phishing and other social engineering attacks. This affects sites that use on-demand rendering (SSR) with the Node or Cloudflare adapters. It does not affect static sites, or sites deployed to Netlify or Vercel. This issue is fixed in version 5.12.8. To work around this issue at the network level, block outgoing redirect responses with a Location header value that starts with `//`.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Astro | Astro | >= 5.2.0, < 5.12.7 |
Related Weaknesses (CWE)
References
- https://github.com/withastro/astro/commit/0567fb7b50c0c452be387dd7c7264b96bedab4Patch
- https://github.com/withastro/astro/security/advisories/GHSA-cq8c-xv66-36gwThird Party Advisory
FAQ
What is CVE-2025-54793?
CVE-2025-54793 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Astro is a web framework for content-driven websites. In versions 5.2.0 through 5.12.7, there is an Open Redirect vulnerability in the trailing slash redirection logic when handling paths with double ...
How severe is CVE-2025-54793?
CVE-2025-54793 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-54793?
Check the references section above for vendor advisories and patch information. Affected products include: Astro Astro.