{"cve":"CVE-2026-73423","nvd":{"published":"2026-08-12T21:17:41.340","modified":"2026-10-24T15:10:00.190","status":"Deferred","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.","cvss_v4":{"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},"cvss_v3":null,"cwes":["CWE-352"],"references":["https://github.com/withastro/astro/commit/0b30b35f864310bee8485c952d1877e82e2b9b1a","https://github.com/withastro/astro/pull/17250","https://github.com/withastro/astro/releases/tag/astro@7.0.6","https://github.com/withastro/astro/security/advisories/GHSA-8mv7-9c27-98vc"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-73423","score":0.00264,"percentile":0.18194,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-8mv7-9c27-98vc","url":"https://osv.dev/vulnerability/GHSA-8mv7-9c27-98vc","summary":"Astro: composable `astro/hono` pipeline bypasses `security.checkOrigin` when `middleware()` is absent or misordered","modified":"2026-08-12T20:56:01.953813Z","packages":[{"ecosystem":"npm","name":"astro","purl":"pkg:npm/astro","ranges":[">=7.0.0 <7.0.6"],"fixed":["7.0.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}