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7.1 High

CVE-2026-54290 Hono is a Web application framework that provides support for any JavaScript runtime

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, with credentials: true and no explicit origin (the default wildcard), the CORS Middleware reflects the request's Origin and sends Access-Control-Allow-Credentials: true. Any site can then make credentialed cross-origin requests and read the responses, exposing cookie-authenticated endpoints to arbitrary origins. This vulnerability is fixed in 4.12.25.

Affected products and versions

Product Affected versions Fixed in
hono 4.12 earliest → < 4.12.25 4.12.25
The 48 CVEs of hono →
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