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Medium 6.5Published Mar 24, 2026

CVE-2026-33768Astro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`

Updated under an hour ago ()

Does this affect you?

It affects withastro astro and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Astro is a web framework. Prior to version 10.0.2, the @astrojs/vercel serverless entrypoint reads the x-astro-path header and x_astro_path query parameter to rewrite the internal request path, with no authentication whatsoever. On deployments without Edge Middleware, this lets anyone bypass Vercel's platform-level path restrictions entirely. The override preserves the original HTTP method and body, so this isn't limited to GET. POST, PUT, DELETE all land on the rewritten path. A Firewall rule blocking /admin/* does nothing when the request comes in as POST /api/health?x_astro_path=/admin/delete-user. This issue has been patched in version 10.0.2.

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
Analyzed
Record last updated
Mar 24, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
withastro astro
withastro:astro (from the name)
before 10.0.2
CNA record
astro @astrojs/vercel
astro:@astrojs/vercel
before 10.0.2
NVD

References

References

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.

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