CVE-2025-65019— Astro Cloudflare adapter has a Stored Cross Site Scripting vulnerability in /_image endpoint
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I. Basic Information for CVE-2025-65019
Vulnerability Information
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Vulnerability Title
Astro Cloudflare adapter has a Stored Cross Site Scripting vulnerability in /_image endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
Astro is a web framework. Prior to version 5.15.9, when using Astro's Cloudflare adapter (@astrojs/cloudflare) with output: 'server', the image optimization endpoint (/_image) contains a critical vulnerability in the isRemoteAllowed() function that unconditionally allows data: protocol URLs. This enables Cross-Site Scripting (XSS) attacks through malicious SVG payloads, bypassing domain restrictions and Content Security Policy protections. This issue has been patched in version 5.15.9.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Astro 跨站脚本漏洞
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 5.15.9之前版本存在跨站脚本漏洞，该漏洞源于图像优化端点无条件允许data协议URL，可能导致跨站脚本攻击。
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
II. Public POCs for CVE-2025-65019
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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-2025-64757 | 3.5 LOW | Astro Development Server is Vulnerable to Arbitrary Local File Read |
| CVE-2025-64765 | Astro middleware authentication checks based on url.pathname can be bypassed via url encod |
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V. Comments for CVE-2025-65019
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