CVE catalog
CVE-2020-36843
DEBIAN-CVE-2020-36843
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.14% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libeddsa-java | 13 | 0.3.0-2.1 | fixed |
| Debian | libeddsa-java | 14 | 0.3.0-2.1 | fixed |
| Suse | apache-sshd | linux enterprise module for development tools 15 sp7 | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise module for development tools 15 sp7 | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise high performance computing 15 sp4-espos | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise high performance computing 15 sp4-espos | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise high performance computing 15 sp4-ltss | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise high performance computing 15 sp4-ltss | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise high performance computing 15 sp5-espos | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise high performance computing 15 sp5-espos | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise high performance computing 15 sp5-ltss | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise high performance computing 15 sp5-ltss | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise server 15 sp4-ltss | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise server 15 sp4-ltss | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise server 15 sp5-ltss | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise server 15 sp5-ltss | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise server 15 sp6-ltss | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise server 15 sp6-ltss | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise server for sap applications 15 sp4 | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise server for sap applications 15 sp4 | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise server for sap applications 15 sp5 | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise server for sap applications 15 sp5 | 1.3-150200.5.3.1 | fixed |
| Suse | apache-sshd | linux enterprise server for sap applications 15 sp6 | 2.18.0-150200.5.11.1 | fixed |
| Suse | jpgpj | linux enterprise server for sap applications 15 sp6 | 1.3-150200.5.3.1 | fixed |
| Opensuse | apache-sshd | tumbleweed | 2.18.0-1.1 | fixed |
| Suse | ed25519-java | linux enterprise module for development tools 15 sp6 | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise high performance computing 15 sp3-ltss | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise high performance computing 15 sp4-espos | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise high performance computing 15 sp4-ltss | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise high performance computing 15 sp5-espos | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise high performance computing 15 sp5-ltss | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise server 15 sp3-ltss | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise server 15 sp4-ltss | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise server 15 sp5-ltss | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise server for sap applications 15 sp3 | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise server for sap applications 15 sp4 | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | linux enterprise server for sap applications 15 sp5 | 0.3.0-150200.5.9.1 | fixed |
| Suse | ed25519-java | enterprise storage 7.1 | 0.3.0-150200.5.9.1 | fixed |
| Opensuse | ed25519-java | leap 15.6 | 0.3.0-150200.5.9.1 | fixed |
| Opensuse | ed25519-java | tumbleweed | 0.3.0-6.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libeddsa-java | deb | 13 | 0.3.0-2.1 | Not reported | DEBIAN-CVE-2020-36843 | Not reported |
| Debian | libeddsa-java | deb | 14 | 0.3.0-2.1 | Not reported | DEBIAN-CVE-2020-36843 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise module for development tools 15 sp7 | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise module for development tools 15 sp7 | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise high performance computing 15 sp4-espos | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise high performance computing 15 sp4-espos | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise high performance computing 15 sp4-ltss | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise high performance computing 15 sp4-ltss | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise high performance computing 15 sp5-espos | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise high performance computing 15 sp5-espos | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise high performance computing 15 sp5-ltss | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise high performance computing 15 sp5-ltss | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise server 15 sp4-ltss | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise server 15 sp4-ltss | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise server 15 sp5-ltss | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise server 15 sp5-ltss | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise server 15 sp6-ltss | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise server 15 sp6-ltss | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise server for sap applications 15 sp4 | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise server for sap applications 15 sp4 | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise server for sap applications 15 sp5 | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise server for sap applications 15 sp5 | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | apache-sshd | rpm | linux enterprise server for sap applications 15 sp6 | 2.18.0-150200.5.11.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Suse | jpgpj | rpm | linux enterprise server for sap applications 15 sp6 | 1.3-150200.5.3.1 | Not reported | SUSE-SU-2026:2472-1 | Not reported |
| Opensuse | apache-sshd | rpm | tumbleweed | 2.18.0-1.1 | Not reported | OPENSUSE-SU-2026:10919-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise module for development tools 15 sp6 | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise high performance computing 15 sp3-ltss | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise high performance computing 15 sp4-espos | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise high performance computing 15 sp4-ltss | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise high performance computing 15 sp5-espos | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise high performance computing 15 sp5-ltss | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise server 15 sp3-ltss | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise server 15 sp4-ltss | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise server 15 sp5-ltss | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise server for sap applications 15 sp3 | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise server for sap applications 15 sp4 | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | linux enterprise server for sap applications 15 sp5 | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Suse | ed25519-java | rpm | enterprise storage 7.1 | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Opensuse | ed25519-java | rpm | leap 15.6 | 0.3.0-150200.5.9.1 | Not reported | SUSE-SU-2025:1029-1 | Not reported |
| Opensuse | ed25519-java | rpm | tumbleweed | 0.3.0-6.1 | Not reported | OPENSUSE-SU-2025:14892-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [apache-sshd-javadoc]Unknown
Source package: [apache-sshd]
Details (1)
2.19.0-2.1· noarch · tumbleweedUnknown · Fixed:
2.18.0-1.1Version impact unknown
pypi · apache-sshd · opensuse · tumbleweed
- [ed25519-java-javadoc]Unknown
Source package: [ed25519-java]
Details (1)
0.3.0-6.5· noarch · tumbleweedUnknown · Fixed:
0.3.0-6.1Version impact unknown
pypi · ed25519-java · opensuse · tumbleweed
- [apache-sshd]Fixed
Source package: [apache-sshd]
Details (1)
2.19.0-2.1· noarch · tumbleweedFixed · Fixed:
2.18.0-1.1pypi · apache-sshd · opensuse · tumbleweed
- [ed25519-java]Fixed
Source package: [ed25519-java]
Details (1)
0.3.0-6.5· noarch · tumbleweedFixed · Fixed:
0.3.0-6.1pypi · ed25519-java · opensuse · tumbleweed
[Debian 13 (Trixie)]
- [libeddsa-java]Fixed
Details (2)
0.3.0-2.1· all · trixieFixed · Fixed:
0.3.0-2.1pypi · libeddsa-java · debian · 13
0.3.0-2.1· all · trixieFixed · Fixed:
0.3.0-2.1pypi · libeddsa-java · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10919-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-36843]
- [https://osv.dev/vulnerability/SUSE-SU-2025:1029-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2472-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:14892-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10919-1]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-36843.json]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]