CVE-2026-73424CWE-441CWE-862broken-access-control

CVE-2026-73424

Medium · published August 17, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
31.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00384 · 31.2th percentile
Weaknesses
CWE-441 · Unintended Proxy or Intermediary ('Confused Deputy'); CWE-862 · Missing Authorization
Published
2026-08-17T22:18Z
References (5)
https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd · [email protected]https://github.com/withastro/astro/pull/17370 · [email protected]https://github.com/withastro/astro/releases/tag/@astrojs/[email protected] · [email protected]https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2 · [email protected]https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 AUG 17:11Z
    Astro: Unauthenticated path override in the @astrojs/vercel ISR function
    cvelistv5