CVE-2026-44727

Katalog CVE

CVSS 5.4 · Medium EPSS 0,44%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada jupyter server. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

Jupyter Server is the backend for Jupyter web applications. Prior to 2.20, the nbconvert HTTP handlers in jupyter_server render user-authored notebook HTML under the Jupyter origin without a sandbox directive in their Content-Security-Policy. Combined with nbconvert.HTMLExporter's default non-sanitizing behavior, a notebook carrying an HTML payload in a display_data output triggers stored XSS with cookie access, full /api/* authority, and kernel RCE. This vulnerability is fixed in 2.20.

Rincian

Terbit di NVD

22 Juni 2026

Terakhir diubah

28 Agustus 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1021: Improper Restriction of Rendered UI Layers or Frames

EPSS (30 hari)

0,44% peluang dieksploitasi; lebih tinggi dari 36,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-fcw5-x6j4-ccmp mitigasi · patch · advisory vendor
• https://github.com/jupyter-server/jupyter_server/commit/6cbee8d65e71abac851c4492fea987ad080580bd patch
• https://access.redhat.com/errata/RHSA-2026:43038
• https://access.redhat.com/errata/RHSA-2026:60520
• https://access.redhat.com/security/cve/CVE-2026-44727
• https://bugzilla.redhat.com/show_bug.cgi?id=2491516
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44727.json