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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
withastro:astro
References 4
https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2
https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2
https://github.com/withastro/astro/pull/17370
https://github.com/withastro/astro/pull/17370
https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38…
https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd
https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3
https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3