{"id":"EUVD-2026-38331","enisaUuid":"e0e7cc4b-8812-34ac-b4eb-638c392d0104","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\u0027s 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.","datePublished":"Jun 22, 2026, 5:18:24 PM","dateUpdated":"Jun 23, 2026, 4:11:23 PM","baseScore":6.5,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","references":"https://github.com/honojs/hono/security/advisories/GHSA-rv63-4mwf-qqc2\n","aliases":"CVE-2026-54288\nGHSA-rv63-4mwf-qqc2\n","assigner":"GitHub_M","epss":0.15,"enisaIdProduct":[{"id":"32cea18b-4d6a-3506-a0f1-736abc2aa97e","product":{"name":"hono","vendor":{"name":"honojs"}},"product_version":"\u003c 4.12.25"}],"enisaIdVendor":[{"id":"d46e1662-5107-3c8e-870a-7bc37800cada","vendor":{"name":"honojs"}}],"enisaIdVulnerability":[{"id":"0d6c3e49-4f81-3fd2-a3d2-58fa285c9798","vulnerability":{"id":"CVE-2026-54288","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\u0027s 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.","datePublished":"Jun 22, 2026, 5:18:24 PM","dateUpdated":"Jun 23, 2026, 4:11:23 PM","status":"PUBLISHED","baseScore":6.5,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","references":"https://github.com/honojs/hono/security/advisories/GHSA-rv63-4mwf-qqc2\n","enisa_id":"EUVD-2026-38331\n","assigner":"GitHub_M","epss":0.15,"dataProcessed":"Nov 5, 2026, 7:16:53 AM","vulnerabilityProduct":[{"id":"ee1d0457-f497-3819-9175-fc5cb1e9b590","product":{"name":"hono","vendor":{"name":"honojs"}},"product_version":"\u003c 4.12.25"}],"vulnerabilityVendor":[{"id":"13a0531b-b99f-3fd7-b955-40395bbc25a5","vendor":{"name":"honojs"}}]}},{"id":"b651c7f5-ebd5-31b4-97c9-3ba31f0440bf","vulnerability":{"id":"GHSA-rv63-4mwf-qqc2","description":"hono: Body Limit Middleware can be bypassed on AWS Lambda by understating `Content-Length`","datePublished":"Jun 16, 2026, 2:32:49 PM","dateUpdated":"Jul 21, 2026, 3:26:52 PM","baseScore":0.0,"references":"https://github.com/honojs/hono/security/advisories/GHSA-rv63-4mwf-qqc2\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-54288\nhttps://github.com/honojs/hono\n","enisa_id":"EUVD-2026-38331\n","aliases":"CVE-2026-54288\nGHSA-rv63-4mwf-qqc2\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:01:46 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}