CVE-2026-85183CWE-1385

CVE-2026-85183

Critical · published September 3, 2026

CVSS v3.1
9.3
EPSS
0%
Percentile
4.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.3 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
EPSS
0.00153 · 4.8th percentile
Weakness
CWE-1385 · Missing Origin Validation in WebSockets
Published
2026-09-03T19:17Z
References (5)
https://github.com/Avaiga/taipy · [email protected]https://github.com/Avaiga/taipy/blob/4.1.1/taipy/gui/server.py · [email protected]https://github.com/Avaiga/taipy/issues/2890 · [email protected]https://www.vulncheck.com/advisories/taipy-through-4.1.1-cross-site-websocket-hijacking-via-wildcard-socket-io-cors · [email protected]https://github.com/Avaiga/taipy/issues/2890 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 05 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 03 SEP 14:12Z
    Taipy through 4.1.1 Cross-Site WebSocket Hijacking via Wildcard socket.io CORS
    cvelistv5