CVE-2026-73424
Astro: Unauthenticated path override in the @astrojs/vercel ISR function
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-441 CWE-862 |
| Vendor | withastro |
| Product | astro |
| Published | Aug 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
withastro / astro
>= 10.0.3, < 11.0.3
References
github.com: https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2 github.com: https://github.com/withastro/astro/pull/17370 github.com: https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd github.com: https://github.com/withastro/astro/releases/tag/@astrojs/[email protected]