What is the CVSS score of CVE-2025-66902?

CVE-2025-66902 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Which versions of Websocket Server are affected by CVE-2025-66902?

Organizations using An input validation face notable risk from CVE-2025-66902, a input validation vulnerability rated CVSS 7.5. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2025-66902?

Yes, a public proof-of-concept exploit is available for CVE-2025-66902. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-66902?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

Websocket Server CVE-2025-66902

HIGH

Improper Input Validation (CWE-20)

2026-01-20 cve@mitre.org

Code Injection Websocket Server

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 30, 2026 - 20:21 vuln.today

Public exploit code

CVE Published

Jan 20, 2026 - 21:16 nvd

HIGH 7.5

DescriptionCVE.org

An input validation issue in in Pithikos websocket-server v.0.6.4 allows a remote attacker to obtain sensitive information or cause unexpected server behavior via the websocket_server/websocket_server.py, WebSocketServer._message_received components.

AnalysisAI

Technical ContextAI

Classified as CWE-20 (Improper Input Validation). Affects Websocket Server. An input validation issue in in Pithikos websocket-server v.0.6.4 allows a remote attacker to obtain sensitive information or cause unexpected server behavior via the websocket_server/websocket_server.py, WebSocketServer._message_received components.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

CVE-2025-66902 vulnerability details – vuln.today

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Websocket Server CVE-2025-66902

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code