CVE-2026-54290 — Hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard

CVE-2026-54290

Hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
honojs / hono	affected < 4.12.25

CWE

CWE-942

References

https://github.com/honojs/hono/security/advisories/GHSA-88fw-hqm2-52qc

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.