Threats Tagged 'cve-2026-40934'
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Threats Tagged 'cve-2026-40934'
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CVE-2026-40934: CWE-613: Insufficient Session Expiration in jupyter-server jupyter_serverCVE-2026-40934 0 Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the secret used to sign authentication cookies is persisted to a static file at ~/.local/share/jupyter/runtime/jupyter_cookie_secret and is never rotated when a user changes their password. After a password reset and server restart, any previously issued authentication cookie remains cryptographically valid because the signing key has not changed. An attacker who has captured a session cookie through any means retains full authenticated access to the server regardless of subsequent password changes. This affects deployments using password-based authentication, particularly shared or public-facing servers where credential rotation is expected to revoke existing sessions. This issue has been fixed in version 2.18.0. Join the discussion | CVE Database V5 | 05/05/2026, 21:31:42 UTC Added: 05/05/2026, 21:51:24 UTC |
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