# CVE-2026-73424

## Summary

- **CVE ID:** CVE-2026-73424
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
- **CWE:** CWE-441, CWE-862
- **Published:** Aug 17, 2026
- **Last Modified:** Aug 18, 2026

## 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.

## Affected Products

- withastro — astro (>= 10.0.3, < 11.0.3)

## References

- [CNA](https://github.com/withastro/astro/pull/17370)
- [CNA](https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2)
- [CNA](https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd)
- [CNA](https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 13.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._