What’s Vulnerable › Vulnerabilities

CVE-2026-85183: Taipy through 4.1.1 Cross-Site WebSocket Hijacking via Wildcard socket.io CORS

• Severity: critical (CVSS 9.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-03 · updated 2026-09-10
• Weakness: CWE-1385

Description

Taipy configures its socket.io server with wildcard CORS origin and credential flag enabled, allowing any web page to establish credentialed WebSocket connections to victim applications. Attackers can open socket.io sessions from arbitrary domains and invoke state variable modifications and action callbacks without CSRF protection.

Affected products

• Avaiga taipy: through 4.1.1

References

• https://github.com/Avaiga/taipy
• https://github.com/Avaiga/taipy/blob/4.1.1/taipy/gui/server.py
• https://github.com/Avaiga/taipy/issues/2890
• https://www.vulncheck.com/advisories/taipy-through-4.1.1-cross-site-websocket-hijacking-via-wildcard-socket-io-cors
• https://github.com/Avaiga/taipy/issues/2890

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