CVE-2026-54290

HIGH

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.1
EPSS 0.0033
EPSS Percentile 25.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-942
Status published
Products (2)
honojs/hono < 4.12.25
npm/hono 0 - 4.12.25npm
Published Jun 22, 2026
Tracked Since Jun 22, 2026