Vulnerability-Lookup

CVE-2026-91925 (GCVE-0-2026-91925)

Vulnerability from cvelistv5 – Published: 2026-09-15 11:00 – Updated: 2026-09-15 12:19

Title

Polyaxon through 2.16.4 Server-Side Template Injection via Unsandboxed Jinja2 Engine

Summary

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.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 12:10 UTC

CWE

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

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/polyaxon/polyaxon/issues/1540	issue-tracking
https://github.com/polyaxon/polyaxon	product
https://github.com/polyaxon/cli/blob/bfea04a0bf93…	technical-description
https://github.com/polyaxon/cli/blob/bfea04a0bf93…	technical-description
https://www.vulncheck.com/advisories/polyaxon-thr…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
polyaxon	polyaxon	Affected: 0 , ≤ 2.16.4 (semver)	guessed

Date Public

2026-06-18 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-91925

Vulnerability from fkie_nvd - Published: 2026-09-15 11:17 - Updated: 2026-09-15 13:16

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/libs/engine.py
	disclosure@vulncheck.com	https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/sections.py
	disclosure@vulncheck.com	https://github.com/polyaxon/polyaxon
	disclosure@vulncheck.com	https://github.com/polyaxon/polyaxon/issues/1540
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/polyaxon-through-2.16.4-server-side-template-injection-via-unsandboxed-jinja2-engine

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:pypi/polyaxon",
          "product": "polyaxon",
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    }
  ],
  "id": "CVE-2026-91925",
  "lastModified": "2026-09-15T13:16:46.980",
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          "lang": "en",
          "value": "CWE-1336"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-W7QQ-X87W-72QX

Vulnerability from github – Published: 2026-09-15 12:31 – Updated: 2026-09-15 12:31

Details

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-91925"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1336"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-15T11:17:13Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-w7qq-x87w-72qx",
  "modified": "2026-09-15T12:31:47Z",
  "published": "2026-09-15T12:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91925"
    },
    {
      "type": "WEB",
      "url": "https://github.com/polyaxon/polyaxon/issues/1540"
    },
    {
      "type": "WEB",
      "url": "https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/libs/engine.py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/sections.py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/polyaxon/polyaxon"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/polyaxon-through-2.16.4-server-side-template-injection-via-unsandboxed-jinja2-engine"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-91925 (GCVE-0-2026-91925)

FKIE_CVE-2026-91925

GHSA-W7QQ-X87W-72QX

Tags

Sightings

Nomenclature