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CVE-2026-91925— Polyaxon through 2.16.4 Server-Side Template Injection via Unsandboxed Jinja2 Engine

Quick assessment

Affected
polyaxon polyaxon
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Polyaxon 2.16.4 及更早版本在服务器端运行准备阶段，使用未沙箱化的 Jinja2 环境渲染操作规范（operation specification）字段，这使得经过身份验证的用户能够执行任意代码。攻击者可以在队列（queue）、命名空间（namespace）、条件（conditions）、预设（presets）或依赖项（dependencies）字段中提交包含 Jinja2 有效载荷的运行请求，从而在调度器（scheduler）进程的上下文中执行操作系统命令，导致数据库凭据和服务令牌泄露。

CVSS 8.8 · High EPSS 0.48% · P40

Affected Version Matrix 1

VendorProduct Version RangeStatus
polyaxon polyaxon ≤ 2.16.4 affected
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I. Basic Information for CVE-2026-91925

Vulnerability Information
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Vulnerability Title
Polyaxon through 2.16.4 Server-Side Template Injection via Unsandboxed Jinja2 Engine
Source: CVE Program / CVE List V5
Vulnerability Description
Polyaxon through 2.16.4 renders operation specification fields with an unsandboxed Jinja2 environment during server-side run preparation, allowing authenticated users to execute arbitrary code. Attackers can submit runs with Jinja2 payloads in queue, namespace, conditions, presets, or dependencies fields to execute operating system commands in the scheduler process context, exposing database credentials and service tokens.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1336
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
polyaxon polyaxon 0 ~ 2.16.4 -

II. Public POCs for CVE-2026-91925

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III. Intelligence Information for CVE-2026-91925

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Patches & Fixes for CVE-2026-91925 (2)

Vendor Advisories for CVE-2026-91925 (1)

Proof of Concept for CVE-2026-91925 (1)

Vendor Pages for CVE-2026-91925 (1)

IV. Related Vulnerabilities

Same vendor: polyaxon
Same weakness: CWE-1336

V. Comments for CVE-2026-91925

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