{"id":"CVE-2026-73423","revision":"3f512d5d0d8544129ca5a03f205cba1f","records":[{"revision":"3f512d5d0d8544129ca5a03f205cba1f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73423","aliases":[],"title":"Astro: composable `astro/hono` pipeline bypasses `security.checkOrigin` when `middleware()` is absent or misordered","description":"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 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.","state":0,"publishedAt":"2026-08-12T20:35:32.181+00:00","modifiedAt":"2026-08-13T17:53:25.469+00:00","affected":[{"ecosystem":"Vendor product","name":"astro","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"withastro\",\n                    \"product\": \"astro\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 7.0.0, < 7.0.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","score":5.1,"severity":"MEDIUM"}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-8mv7-9c27-98vc","https://github.com/withastro/astro/pull/17250","https://github.com/withastro/astro/commit/0b30b35f864310bee8485c952d1877e82e2b9b1a","https://github.com/withastro/astro/releases/tag/astro@7.0.6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73423","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73423","identifiers":["CVE-2026-73423"]},"retained":false,"historicalAffected":[]}],"coverage":[]}