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CVE-2025-64525— Astro: URL manipulation via unsanitized headers leads to path-based middleware protections bypass, potential SSRF/cache-poisoning, CVE-2025-61925 bypass

Quick assessment

Affected
withastro astro
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Astro是Astro开源的一个内容驱动网站的 web 框架。 Astro 2.16.0版本至5.15.5之前版本存在代码问题漏洞，该漏洞源于不安全使用x-forwarded-proto和x-forwarded-port请求标头，可能导致中间件保护路由绕过和服务器端请求伪造。

CVSS 6.5 · Medium EPSS 1.16% · P66

Public Exploits 1

Nuclei · 1 CVE-2025-64525.yaml [template]
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I. Basic Information for CVE-2025-64525

Vulnerability Information
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Vulnerability Title
Astro: URL manipulation via unsanitized headers leads to path-based middleware protections bypass, potential SSRF/cache-poisoning, CVE-2025-61925 bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers `x-forwarded-proto` and `x-forwarded-port` are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protected route bypass (only via `x-forwarded-proto`), DoS via cache poisoning (if a CDN is present), SSRF (only via `x-forwarded-proto`), URL pollution (potential SXSS, if a CDN is present), and WAF bypass. Version 5.15.5 contains a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Astro 代码问题漏洞
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 2.16.0版本至5.15.5之前版本存在代码问题漏洞，该漏洞源于不安全使用x-forwarded-proto和x-forwarded-port请求标头，可能导致中间件保护路由绕过和服务器端请求伪造。
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

Vendor Product Affected Versions CPE Subscribe
withastro astro >= 2.16.0, < 5.15.5 -

II. Public POCs for CVE-2025-64525

# POC Description Source Link Shenlong Link
1 Astro 2.16.0 to 5.15.5 contains a broken access control caused by insecure use of unsanitized x-forwarded-proto and x-forwarded-port headers in URL building, letting attackers bypass middleware protection, cause DoS, SSRF, and URL pollution, exploit requires crafted headers. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-64525.yaml POC Details
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III. Intelligence Information for CVE-2025-64525

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Patches & Fixes for CVE-2025-64525 (2)

Vendor Advisories for CVE-2025-64525 (1)

IV. Related Vulnerabilities

Same product: astro
Same vendor: withastro
Same weakness: CWE-918

V. Comments for CVE-2025-64525

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