{"id":"CVE-2026-73424","state":"PUBLISHED","title":"Astro: Unauthenticated path override in the @astrojs/vercel ISR function","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.","publishedAt":"2026-08-17T17:11:59.782Z","updatedAt":"2026-08-18T14:49:18.484Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["withastro astro"],"affected":[{"vendor":"withastro","product":"astro","versions":[{"version":">= 10.0.3, < 11.0.3","status":"affected"}]}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2","https://github.com/withastro/astro/pull/17370","https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd","https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3"],"weaknesses":["CWE-441","CWE-862"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73424.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73424","state":"PUBLISHED","datePublished":"2026-08-17T17:11:59.782Z","dateUpdated":"2026-08-18T14:49:18.484Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-12T14:32:11.795Z"},"containers":{"cna":{"title":"Astro: Unauthenticated path override in the @astrojs/vercel ISR function","descriptions":[{"lang":"en","value":"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":[{"vendor":"withastro","product":"astro","versions":[{"version":">= 10.0.3, < 11.0.3","status":"affected"}]}],"references":[{"url":"https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2","name":"https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/withastro/astro/pull/17370","name":"https://github.com/withastro/astro/pull/17370","tags":["x_refsource_MISC"]},{"url":"https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd","name":"https://github.com/withastro/astro/commit/3a43cf0f3690a8e33cb30109bc5165611cf38fcd","tags":["x_refsource_MISC"]},{"url":"https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3","name":"https://github.com/withastro/astro/releases/tag/@astrojs/vercel@11.0.3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-441","lang":"en","description":"CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-17T17:11:59.782Z"},"source":{"advisory":"GHSA-x27w-589x-frm2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/withastro/astro/security/advisories/GHSA-x27w-589x-frm2","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-18T14:48:58.804991Z","id":"CVE-2026-73424","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-18T14:49:18.484Z"}}]}}}