Medium 6.5Published Aug 17, 2026

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

Updated under an hour ago (2026-10-19 07:30 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for withastro astro

Exploited in the last 30 days

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.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-441, CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

withastro astro withastro:astro (from the name)	from 10.0.3, < 11.0.3	CNA record

References

https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2x-refsource-confirm
https://github.com/withastro/astro/pull/17370x-refsource-misc
https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcdx-refsource-misc
https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.