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CVE-2025-64765— Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values

Quick assessment

Affected
withastro astro
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 5.15.8之前版本存在路径遍历漏洞，该漏洞源于路径规范化不一致，可能导致绕过验证检查访问受保护路由。

AI Predicted 9.1 Difficulty: Easy EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-64765

Vulnerability Information
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Vulnerability Title
Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values
Source: CVE Program / CVE List V5
Vulnerability Description
Astro is a web framework. Prior to version 5.15.8, a mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI() to determine which route to render, while the middleware uses context.url.pathname without applying the same normalization (decodeURI). This discrepancy may allow attackers to reach protected routes using encoded path variants that pass routing but bypass validation checks. This issue has been patched in version 5.15.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Astro 路径遍历漏洞
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 5.15.8之前版本存在路径遍历漏洞，该漏洞源于路径规范化不一致，可能导致绕过验证检查访问受保护路由。
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 < 5.15.8 -

II. Public POCs for CVE-2025-64765

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III. Intelligence Information for CVE-2025-64765

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Patches & Fixes for CVE-2025-64765 (1)

Same Patch Batch · withastro · 2025-11-19 · 4 CVEs total

CVE-2025-64764 7.1 HIGH Astro is vulnerable to Reflected XSS via the server islands feature
CVE-2025-65019 5.4 MEDIUM Astro Cloudflare adapter has a Stored Cross Site Scripting vulnerability in /_image endpoi
CVE-2025-64757 3.5 LOW Astro Development Server is Vulnerable to Arbitrary Local File Read

IV. Related Vulnerabilities

Same product: astro
Same vendor: withastro
Same weakness: CWE-22

V. Comments for CVE-2025-64765

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