CVE-2020-36843

Published Mar 13, 2025 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-6277 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.
Github GHSA Github GHSA GHSA-p53j-g8pw-4w5f Ed25519 Signature Malleability in ed25519-java Due to Missing Scalar Range Check
History
Type Values Removed Values Added
Metrics epss

{'score': 9e-05}

epss

{'score': 0.00012}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Mar 18, 2025, 4:22 PM
Reserved
Mar 13, 2025, 12:00 AM
Status
Deferred
Published
Mar 13, 2025, 6:15 AM
Modified
Jun 17, 2026, 3:16 AM