Vulnerability · Published Sep 3, 2026 · Assigned by VulnCheck
CVE-2026-85183Taipy through 4.1.1 Cross-Site WebSocket Hijacking via Wildcard socket.io CORS
Critical 9.3
In plain English
A critical-severity security flaw in taipy from Avaiga. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 3.1)9.3Critical
Exploit odds (30 days)0.2%top 85.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
Weakness: CWE-1385 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
References
- GitHub Issue #2890 issue-tracking
- https://github.com/Avaiga/taipy product
- gui/server.py at 4.1.1 technical-description
- VulnCheck Advisory: Taipy through 4.1.1 Cross-Site WebSocket Hijacking via Wildcard socket.io CORS third-party-advisory