{"id":"CVE-2026-73424","aliases":["GHSA-x27w-589x-frm2"],"url":"https://o3.security/vulnerability/CVE-2026-73424","summary":"Astro: Unauthenticated path override in the @astrojs/vercel ISR function","details":"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.","published":"2026-08-17T17:11:59.782Z","modified":"2026-08-19T03:48:34.092628457Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@astrojs/vercel","fixedVersion":"11.0.3"}],"fix":{"url":"https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd","label":"withastro/astro@3a43cf0"},"references":[{"type":"WEB","url":"https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73424.json"},{"type":"ADVISORY","url":"https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73424"},{"type":"FIX","url":"https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd"},{"type":"FIX","url":"https://github.com/withastro/astro/pull/17370"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-19T03:48:34.092628457Z"}}