CVE-2020-36843CWE-347

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…

Medium · published March 13, 2025

CVSS v3.1
4.3
EPSS
0%
Percentile
3.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00143 · 3.3th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2025-03-13T00:00Z
EPSS history
Timeline
  • 13 MAR 00:00Z
    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…
    cvelistv5