CVE-2026-91925
Polyaxon through 2.16.4 Server-Side Template Injection via Unsandboxed Jinja2 Engine
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1336 |
| Vendor | polyaxon |
| Product | polyaxon |
| Published | Sep 15, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
polyaxon / polyaxon
0 ≤ 2.16.4
References
github.com: https://github.com/polyaxon/polyaxon/issues/1540 github.com: https://github.com/polyaxon/polyaxon github.com: https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/libs/engine.py github.com: https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/sections.py vulncheck.com: https://www.vulncheck.com/advisories/polyaxon-through-2.16.4-server-side-template-injection-via-unsandboxed-jinja2-engine
Credits
🔍 George Chen