PT-2026-3651 · Pithikos · Websocket Server

Published 2026-01-20 · Updated 2026-01-20 · CVE-2025-66902

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Pithikos websocket-server version 0.6.4

Description An input validation issue exists in the WebSocketServer. message received() function within the websocket server/websocket server.py component. This flaw allows a remote attacker to obtain sensitive information or cause unexpected server behavior.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2025-66902

Affected Products

Websocket Server

References · 3

• 🔥 https://github.com/cyberinvest211/websocket-server-vuln-poc/tree/main · Exploit
• https://osv.dev/vulnerability/CVE-2025-66902 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-66902 · Security Note