{"id":"CVE-2026-23967","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-23967","summary":"sm-crypto Affected by Signature Malleability in SM2-DSA","details":"### Summary\n\nA signature malleability vulnerability exists in the SM2 signature verification logic of the sm-crypto library. An attacker can derive a new valid signature for a previously signed message from an existing signature.\n\n### Credit\n\nThis vulnerability was discovered by:\n- XlabAI Team of Tencent Xuanwu Lab\n- Atuin Automated Vulnerability Discovery Engine","published":"2026-01-21T16:13:35Z","modified":"2026-02-03T03:10:18.226059Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"sm-crypto","fixedVersion":"0.3.14"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-qv7w-v773-3xqm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23967"},{"type":"PACKAGE","url":"https://github.com/JuneAndGreen/sm-crypto"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-02-03T03:10:18.226059Z"}}