CVE-2026-40864

Katalog CVE

CVSS 4.3 · Medium EPSS 0,18%

Kerentanan Cross-Site Request Forgery (CSRF) pada jupyterhub. Skor CVSS 3.1 4.3 (Medium) menurut NVD.

Deskripsi (NVD)

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. In versions 4.1.0 through 5.4.4, XSRF protection (updated in 4.1.0) inappropriately treated requests with Sec-Fetch-Mode: no-cors as same-origin requests, bypassing XSRF checks. The JSON API is not affected, only HTTP form endpoints, such as /hub/spawn and /hub/accept-share, meaning attackers could trigger server spawn (but not access the server) and if the attacker is a JupyterHub user permitted to share access to their server, cause a user to accept a share and have access to the attacker's server. This issue has been fixed in version 5.4.5. If developers are unable to immediately upgrade, they can temporarily mitigate this issue by dropping requests to JupyterHub with Sec-Fetch-Mode: no-cors if they are using a reverse proxy.

Rincian

Terbit di NVD

22 Mei 2026

Terakhir diubah

23 Juli 2026

Status NVD

Analyzed

CVSS 3.1

4.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-352: Cross-Site Request Forgery (CSRF)

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-m68r-v472-jgq9 mitigasi · advisory vendor
• https://github.com/jupyterhub/jupyterhub/commit/9c5ec277d3cda5a59de2d8c8117efa77bd941127 patch