Which versions of Blockchain are affected by CVE-2026-3194?

Organizations using A flaw should be aware of moderate risk from CVE-2026-3194, a improper authentication vulnerability rated CVSS 4.5. This could allow unauthorized access to protected resources.

Is there a public PoC exploit available for CVE-2026-3194?

Yes, a public proof-of-concept exploit is available for CVE-2026-3194. Prioritise patching immediately. EPSS: 0.0%.

Blockchain CVE-2026-3194

Q: What is the CVSS score of CVE-2026-3194?

CVE-2026-3194 has a CVSS 4.0 base score of 1.1 (Low). CVSS vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

LOW

Improper Authentication (CWE-287)

2026-02-25 cna@vuldb.com

Authentication Bypass Blockchain

1.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

1.1 LOW

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

4.5 (MEDIUM) 1.1 (LOW)

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 05, 2026 - 00:52 vuln.today

Public exploit code

CVE Published

Feb 25, 2026 - 18:23 nvd

MEDIUM 4.5

DescriptionCVE.org

A flaw has been found in Chia Blockchain 2.1.0. The affected element is the function send_transaction/get_private_key of the component RPC Server Master Passphrase Handler. This manipulation causes missing authentication. The attack can only be executed locally. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been published and may be used. The vendor was informed early via email. A separate report via bugbounty was rejected with the reason "This is by design. The user is responsible for host security".

AnalysisAI

Chia Blockchain 2.1.0's RPC Server Master Passphrase Handler lacks proper authentication in the send_transaction and get_private_key functions, allowing authenticated local attackers to bypass security controls with public exploit code available. An attacker with local access and existing privileges could manipulate these functions to gain unauthorized access to sensitive blockchain operations, though exploitation requires high complexity and the vendor considers this a user responsibility issue. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 4.5 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. Detailed patch versions, workarounds, and compensating controls in full report.

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Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-3194 vulnerability details – vuln.today

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