{"id":"CVE-2026-54288","revision":"dd9dd89bf0404b639f78b411a5291776","records":[{"revision":"dd9dd89bf0404b639f78b411a5291776","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-54288","aliases":[],"title":"Hono: Body Limit Middleware can be bypassed on AWS Lambda by understating `Content-Length`","description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, the Body Limit Middleware trusts the request's Content-Length header to decide whether a body is within the limit. On AWS Lambda (API Gateway v1/v2, ALB, VPC Lattice, and Lambda@Edge) the body is delivered fully buffered and the adapter builds the request with the client-declared Content-Length, which need not match the actual payload. A client can declare a tiny Content-Length while sending a much larger body, slipping past the limit. This vulnerability is fixed in 4.12.25.","state":0,"publishedAt":"2026-06-22T17:18:24.532+00:00","modifiedAt":"2026-06-23T16:11:23.131+00:00","affected":[{"ecosystem":"Vendor product","name":"hono","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"honojs\",\n                    \"product\": \"hono\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 4.12.25\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-rv63-4mwf-qqc2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-54288","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-54288","identifiers":["CVE-2026-54288"]},"retained":false,"historicalAffected":[]}],"coverage":[]}