CVE-2026-73423

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

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-12 21:17

Updated : 2026-09-09 21:02

NVD link : CVE-2026-73423

Mitre link : CVE-2026-73423

CVE.ORG link : CVE-2026-73423

JSON object : View

Products Affected

No product.

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

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