{"id":"CVE-2026-33895","revision":"1c6e60e5dae647ed86482279b1513b80","records":[{"revision":"1c6e60e5dae647ed86482279b1513b80","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-33895","aliases":[],"title":"Forge has signature forgery in Ed25519 due to missing S > L check","description":"Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, Ed25519 signature verification accepts forged non-canonical signatures where the scalar S is not reduced modulo the group order (`S >= L`). A valid signature and its `S + L` variant both verify in forge, while Node.js `crypto.verify` (OpenSSL-backed) rejects the `S + L` variant, as defined by the specification. This class of signature malleability has been exploited in practice to bypass authentication and authorization logic (see CVE-2026-25793, CVE-2022-35961). Applications relying on signature uniqueness (i.e., dedup by signature bytes, replay tracking, signed-object canonicalization checks) may be bypassed. Version 1.4.0 patches the issue.","state":0,"publishedAt":"2026-03-27T20:47:54.492+00:00","modifiedAt":"2026-09-04T12:04:49.718+00:00","affected":[{"ecosystem":"Vendor product","name":"forge","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"digitalbazaar\",\n                    \"product\": \"forge\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.4.0\",\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:N/I:H/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/digitalbazaar/forge/security/advisories/GHSA-q67f-28xg-22rw","https://github.com/digitalbazaar/forge/commit/bdecf11571c9f1a487cc0fe72fe78ff6dfa96b85","https://datatracker.ietf.org/doc/html/rfc8032#section-8.4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-33895","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-33895","identifiers":["CVE-2026-33895"]},"retained":false,"historicalAffected":[]}],"coverage":[]}