CVE-2026-40864

CVE-2026-40864 — JupyterHub XSRF bypass via cross-origin form POST Sec-Fetch-Mode: no-cors Severity : Medium CVSS 5.4 CWE : CWE-352 — Cross-Site Request Forgery XSRF Affected : jupyterhub 4.1.0 ≤ version posting to a different origin — precisely the classic CSRF vector the token is supposed to...