CVE-2026-31864

Katalog CVE

CVSS 6.8 · Medium EPSS 0,54%

Kerentanan Improper Neutralization of Special Elements Used in a Template Engine pada fit2cloud jumpserver. Skor CVSS 3.1 6.8 (Medium) menurut github.com.

Deskripsi (NVD)

JumpServer is an open source bastion host and an operation and maintenance security audit system. a Server-Side Template Injection (SSTI) vulnerability exists in JumpServer's Applet and VirtualApp upload functionality. This vulnerability can only be exploited by users with administrative privileges (Application Applet Management or Virtual Application Management permissions). Attackers can exploit this vulnerability to execute arbitrary code within the JumpServer Core container. The vulnerability arises from unsafe use of Jinja2 template rendering when processing user-uploaded YAML configuration files. When a user uploads an Applet or VirtualApp ZIP package, the manifest.yml file is rendered through Jinja2 without sandbox restrictions, allowing template injection attacks.

Rincian

Terbit di NVD

13 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.8 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

EPSS (30 hari)

0,54% peluang dieksploitasi; lebih tinggi dari 43,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/jumpserver/jumpserver/security/advisories/GHSA-qx8h-rx2j-j5wc patch · advisory vendor
• https://github.com/jumpserver/jumpserver/pull/16608 issue tracking