VULNERABILITY INTELLIGENCE
CVE-2020-36843
CVSS score4.3 MEDIUM
EPSS probability0.14%
CISA KEVNot currently listed
Published2025-03-13
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
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.
Weakness classification
- cve@mitre.org: CWE-347