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CVE-2025-54793— Astro: Duplicate trailing slash feature can lead to Open Redirects

EPSS 0.96% · P77
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I. Basic Information for CVE-2025-54793

Vulnerability Information
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Vulnerability Title
Astro: Duplicate trailing slash feature can lead to Open Redirects
Source: NVD (National Vulnerability Database)
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 `//`.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Astro 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Astro是Astro开源的一个内容驱动网站的 web 框架。 Astro 5.2.0至5.12.7版本存在输入验证错误漏洞，该漏洞源于双斜杠路径处理不当，可能导致开放重定向攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
withastroastro >= 5.2.0, < 5.12.8 -

II. Public POCs for CVE-2025-54793

#POC DescriptionSource LinkShenlong Link
1Group project — CVE-2025-54793 detection & mitigation (Bhuvanesh, Shiva, Emma)https://github.com/Bhuvanesh-Murdoch2005/ict279-cve-2025-54793POC Details
2Astro 5.2.0 through 5.12.7 contains an open redirect caused by improper handling of paths with double slashes in trailing slash redirection logic, letting attackers redirect users to arbitrary external domains, exploit requires on-demand SSR with Node or Cloudflare adapters. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-54793.yamlPOC Details
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III. Intelligence Information for CVE-2025-54793

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IV. Related Vulnerabilities

Same product: astro
Same vendor: withastro
Same weakness: CWE-601

V. Comments for CVE-2025-54793

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