Unauthenticated authorization bypass via unchecked path override
Published Mar 24, 2026 · Updated Mar 24, 2026
Path authorization bypass in Astro @astrojs/vercel before 10.0.2 allows remote attackers to access restricted routes via path overrides. The serverless entrypoint trusts the x-astro-path header or x_astro_path query parameter and rewrites url.pathname while preserving the request method and body. Deployments using server output without Edge Middleware expose the override, allowing Vercel path controls to be bypassed for protected reads and writes.
Summary
What happened
Path authorization bypass in Astro @astrojs/vercel before 10.0.2 allows remote attackers to access restricted routes via path overrides. The serverless entrypoint trusts the x-astro-path header or x_astro_path query parameter and rewrites url.pathname while preserving the request method and body. Deployments using server output without Edge Middleware expose the override, allowing Vercel path controls to be bypassed for protected reads and writes.
The record
- CVE
- CVE-2026-33768
- Published
- Mar 24, 2026
- Updated
- Mar 24, 2026
- Vendor
- Astro Technology Company
- Product
- Astro
- Classifications
- CWE-441, CWE-862, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 24, 2026CVE publishedPublication date reported by the CVE source.
- Mar 24, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 10.0.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitHub advisory path-override proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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