What is the CVSS score of CVE-2020-36843?

CVE-2020-36843 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Jwt Attack are affected by CVE-2020-36843?

CVE-2020-36843 presents moderate security risk, a signature bypass vulnerability rated CVSS 4.3. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2020-36843?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Jwt Attack CVE-2020-36843

MEDIUM

Improper Verification of Cryptographic Signature (CWE-347)

2025-03-13 cve@mitre.org

Jwt Attack Information Disclosure Java Suse

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

SUSE

MEDIUM

qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:31 vuln.today

CVE Published

Mar 13, 2025 - 06:15 nvd

MEDIUM 4.3

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

2,422 maven packages depend on net.i2p.crypto:eddsa (233 direct, 2,274 indirect)
5 maven packages depend on net.i2p:i2p (5 direct, 0 indirect)

Ecosystem-wide dependent count for version 0.3.0 and other introduced versions.

DescriptionCVE.org

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.

AnalysisAI

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. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.

Technical ContextAI

This vulnerability is classified under CWE-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 Unforgeability under Chosen Message Attacks) property. This allows attackers to create new valid signatures different from previous signatures for a known message. Version information: through 0.3.0.

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Vendor StatusVendor

SUSE

Severity: Medium

Product	Status
SUSE Enterprise Storage 7.1	Fixed
SUSE Linux Enterprise Desktop 15 SP6 SUSE Linux Enterprise High Performance Computing 15 SP6 SUSE Linux Enterprise Module for Development Tools 15 SP6 SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP6	Fixed
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS	Fixed

CVE-2020-36843 vulnerability details – vuln.today

Back

Jwt Attack CVE-2020-36843

Severity by source

CVSS VectorNVD

Lifecycle Timeline

Blast Radius

DescriptionCVE.org

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

More in Jwt Attack

Same weakness CWE-347 – Improper Verification of Cryptographic Signature

Same technique Information Disclosure

Vendor StatusVendor

SUSE

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External POC / Exploit Code