CVE-2020-36843

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CVSS 3.1

4.3 medium

EPSS

<1%p4

Published

Mar 13, 2025 (Mar 13, 2025)

Modified

Jun 17, 2026

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: CWE-347
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.1%)

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