{"id":"CVE-2020-36843","state":"PUBLISHED","title":"The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under","description":"The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message Attacks) property. This allows attackers to create new valid signatures different from previous signatures for a known message.","publishedAt":"2025-03-13T00:00:00.000Z","updatedAt":"2025-03-18T16:22:08.617Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","source":"mitre"},"assigner":"mitre","products":["str4d ed25519-java"],"affected":[{"vendor":"str4d","product":"ed25519-java","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.3.0","versionType":"semver"}]}],"references":["https://github.com/str4d/ed25519-java/issues/82#issue-727629226","https://eprint.iacr.org/2020/1244"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T19:47:24.909Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/36xxx/CVE-2020-36843.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-36843","state":"PUBLISHED","datePublished":"2025-03-13T00:00:00.000Z","dateUpdated":"2025-03-18T16:22:08.617Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2025-03-13T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message Attacks) property. This allows attackers to create new valid signatures different from previous signatures for a known message."}],"affected":[{"vendor":"str4d","product":"ed25519-java","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.3.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/str4d/ed25519-java/issues/82#issue-727629226"},{"url":"https://eprint.iacr.org/2020/1244"}],"metrics":[{"cvssV3_1":{"version":"3.1","baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","description":"CWE-347 Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2025-03-13T05:20:08.585Z"},"x_generator":{"engine":"enrichogram 0.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-18T16:22:00.551300Z","id":"CVE-2020-36843","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-03-18T16:22:08.617Z"}}]}}}