{"id":"CVE-2026-73423","title":"Astro is a web framework for content-driven websites","summary":"Astro is a web framework for content-driven websites. From 7.0.0 until 7.0.6, the composable astro/hono pipeline installs security.checkOrigin only through the middleware() primitive, while actions() and pages() can dispatch to user code…","severity":"none","cwe":["CWE-352"],"published":"2026-08-12","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:02:22.660","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73423","references":[{"url":"https://github.com/withastro/astro/commit/0b30b35f864310bee8485c952d1877e82e2b9b1a","label":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/pull/17250","label":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/releases/tag/astro@7.0.6","label":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/security/advisories/GHSA-8mv7-9c27-98vc","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00182,"epssPercentile":0.08068,"ingestedAt":"2026-09-09T21:22:45.532Z","slug":"CVE-2026-73423","body":"## Overview\n\nAstro is a web framework for content-driven websites. From 7.0.0 until 7.0.6, the composable astro/hono pipeline installs security.checkOrigin only through the middleware() primitive, while actions() and pages() can dispatch to user code independently. Mounting actions() before middleware(), as in the examples/advanced-routing example and Cloudflare Hono documentation, allows cross-origin form-encoded action requests to execute before the origin check, and using pages() without middleware() drops the check for on-demand endpoints and pages. The flaw enables blind write-only cross-site request forgery using the victim's cookies against ActionHandler.handle and PagesHandler.handleWithErrorFallback when manifest.checkOrigin is enabled; the attacker can trigger a state-mutating action or endpoint handler but cannot read the cross-origin response. The default non-composable astro() pipeline is not affected. This issue is fixed in version 7.0.6.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}