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 `//`.
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Tue, 12 Aug 2025 08:00:00 +0000
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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 `//`. | |
Title | Astro: Duplicate trailing slash feature can lead to Open Redirects | |
Weaknesses | CWE-601 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-08-08T00:02:38.299Z
Updated: 2025-08-08T16:55:38.979Z
Reserved: 2025-07-29T16:50:28.394Z
Link: CVE-2025-54793

Updated: 2025-08-08T16:55:32.544Z

Status : Awaiting Analysis
Published: 2025-08-08T01:15:24.950
Modified: 2025-08-08T20:30:18.180
Link: CVE-2025-54793

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