{"id":"CVE-2026-33768","published":"2026-03-24T18:40:12Z","modified":"2026-03-24T18:53:24Z","title":"Astro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`","vendor":"withastro","product":"astro","tier":"tail","description":{"text":"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.","provenance":"source","from":"CVE.org"},"cvss":{"score":6.5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00344,"percentile":0.27799,"provenance":"source"},"cwes":[{"id":"CWE-441","name":"Unintended Proxy or Intermediary"},{"id":"CWE-862","name":"Missing Authorization"}],"references":[{"url":"https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/withastro/astro/pull/15959","tags":["x_refsource_MISC"]},{"url":"https://github.com/withastro/astro/commit/335a204161f5a7293c128db570901d4f8639c6ed","tags":["x_refsource_MISC"]},{"url":"https://github.com/withastro/astro/releases/tag/%40astrojs%2Fvercel%4010.0.2","tags":["x_refsource_MISC"]}],"priority":{"score":10.1,"factors":[{"name":"EPSS percentile","points":5.56},{"name":"CVSS severity","points":4.55}]},"vendorSlug":"withastro","affectedVersions":[{"vendor":"withastro","product":"astro","versions":["< 10.0.2"]}],"affected":[{"ecosystem":"npm","package":"@astrojs/vercel","vulnerableRanges":["<10.0.2"],"patched":["10.0.2"],"from":["GHSA-mr6q-rp88-fx84"],"provenance":"source"}],"euvd":{"id":"EUVD-2026-14982","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-withastro-astro-cve-2025-29927","parents":[{"from":"CVE-2025-29927","to":"CVE-2026-33768","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-mr6q-rp88-fx84","via":"reference","url":"https://github.com/advisories/GHSA-f82v-jwr5-mffw"}]}],"children":[{"from":"CVE-2026-33768","to":"CVE-2026-73424","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-x27w-589x-frm2","via":"reference","url":"https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84"},{"kind":"similar","provenance":"machine","score":0.45,"basis":"same product + CWE + description similarity"}]}]}}