{"cve":"CVE-2026-54290","nvd":{"published":"2026-06-22T18:16:47.620","modified":"2026-10-25T23:10:00.167","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","score":7.1},"cwes":["CWE-942"],"references":["https://github.com/honojs/hono/security/advisories/GHSA-88fw-hqm2-52qc"],"products":[],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-54290","score":0.00328,"percentile":0.25707,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-88fw-hqm2-52qc","url":"https://osv.dev/vulnerability/GHSA-88fw-hqm2-52qc","summary":"hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard","modified":"2026-09-10T03:50:48.939674527Z","packages":[{"ecosystem":"npm","name":"hono","purl":"pkg:npm/hono","ranges":["<4.12.25"],"fixed":["4.12.25"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}