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OpenAdvisories
Medium · 5.3 CVE-2026-126355 EUVD-2026-124735GHSA-46wx-v44x-9hh2

Hono: `csrf()` does not check requests sent by hyperlink auditing (`text/ping`)

Published Nov 12, 2026 · Assigned by GitHub_M

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.16, csrf() limits origin validation to the content types normally sent by HTML forms and therefore does not validate text/ping requests generated by Chromium hyperlink auditing. Chrome and Edge can send a cross-origin credentialed POST without a CORS preflight through an <a ping> action, and the middleware then skips both Origin and Sec-Fetch-Site checks. The fixed request body limits exploitation to state-changing endpoints whose effect is selected by the path or query string and does not depend on submitted body data. The user's cookie must accompany the request, which generally requires a same-site origin or a cookie configured with SameSite=None, and Firefox does not send hyperlink-auditing pings by default. This issue is fixed in version 4.13.16.

Affected products

VendorProductAffectedFixed
honojs hono < 4.13.16 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm hono < 4.13.16 4.13.16 GHSA-46wx-v44x-9hh2

References