{"id":"GHSA-qv7w-v773-3xqm","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","aliases":["CVE-2026-23967"],"modified":"2026-02-03T03:10:18.226059Z","published":"2026-01-21T16:13:35Z","database_specific":{"nvd_published_at":"2026-01-22T03:15:47Z","cwe_ids":["CWE-347"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-01-21T16:13:35Z"},"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"}],"affected":[{"package":{"name":"sm-crypto","ecosystem":"npm","purl":"pkg:npm/sm-crypto"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.3.14"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-qv7w-v773-3xqm/GHSA-qv7w-v773-3xqm.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}