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CVE-2026-73424— Astro: Unauthenticated path override in the @astrojs/vercel ISR function

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 Astro是Astro组织开源的一个内容驱动网站的 web 框架。 Astro 10.0.3版本至11.0.3之前版本存在安全漏洞，该漏洞源于packages/integrations/vercel/src/serverless/entrypoint.ts中Astro Vercel适配器仅根据x-vercel-isr标头接受x_astro_path，可能导致未经身份验证的攻击者通过GET请求渲染受Vercel边缘路径规则或拆分边缘中间件保护的路由。

CVSS 6.5 · Medium EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
withastro astro >= 10.0.3, < 11.0.3 affected
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I. Basic Information for CVE-2026-73424

Vulnerability Information
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Vulnerability Title
Astro: Unauthenticated path override in the @astrojs/vercel ISR function
Source: CVE Program / CVE List V5
Vulnerability Description
Astro is a web framework for content-driven websites. From 10.0.3 until 11.0.3, the Astro Vercel adapter in packages/integrations/vercel/src/serverless/entrypoint.ts accepts x_astro_path for the public /_isr function based only on the x-vercel-isr header, allowing unauthenticated GET requests to render routes protected only by Vercel edge path rules or split edge middleware. This issue is fixed in 11.0.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5
Vulnerability Title
Astro 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Astro Astro是Astro组织开源的一个内容驱动网站的 web 框架。 Astro 10.0.3版本至11.0.3之前版本存在安全漏洞，该漏洞源于packages/integrations/vercel/src/serverless/entrypoint.ts中Astro Vercel适配器仅根据x-vercel-isr标头接受x_astro_path，可能导致未经身份验证的攻击者通过GET请求渲染受Vercel边缘路径规则或拆分边缘中间件保护的路由。
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 >= 10.0.3, < 11.0.3 -

II. Public POCs for CVE-2026-73424

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III. Intelligence Information for CVE-2026-73424

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Patches & Fixes for CVE-2026-73424 (2)

Vendor Advisories for CVE-2026-73424 (1)

Vendor Pages for CVE-2026-73424 (1)

IV. Related Vulnerabilities

Same product: astro
Same vendor: withastro
Same weakness: CWE-441

V. Comments for CVE-2026-73424

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