Vulnerability-Lookup

GHSA-W7QQ-X87W-72QX

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

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.

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

Show details on source website

JSON

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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"
    }
  ]
}

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

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
polyaxon	polyaxon	Affected: 0 , ≤ 2.16.4 (semver)

Date Public

2026-06-18 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-91925",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-15T12:10:41.478937Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-15T12:19:39.773Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:pypi/polyaxon",
          "product": "polyaxon",
          "vendor": "polyaxon",
          "versions": [
            {
              "lessThanOrEqual": "2.16.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "George Chen"
        }
      ],
      "datePublic": "2026-06-18T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1336",
              "description": "Improper Neutralization of Special Elements Used in a Template Engine",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T11:00:53.078Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Issue #1540",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/polyaxon/polyaxon/issues/1540"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/polyaxon/polyaxon"
        },
        {
          "name": "engine.py - get_engine builds an unsandboxed jinja2.Environment used by render_template",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/libs/engine.py"
        },
        {
          "name": "sections.py - PARSING_SECTIONS includes the user-controlled queue, namespace and conditions fields",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/polyaxon/cli/blob/bfea04a0bf93886f69a3195954204d9d010b55aa/cli/polyaxon/_polyaxonfile/specs/sections.py"
        },
        {
          "name": "VulnCheck Advisory: Polyaxon through 2.16.4 Server-Side Template Injection via Unsandboxed Jinja2 Engine",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/polyaxon-through-2.16.4-server-side-template-injection-via-unsandboxed-jinja2-engine"
        }
      ],
      "title": "Polyaxon through 2.16.4 Server-Side Template Injection via Unsandboxed Jinja2 Engine",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-91925",
    "datePublished": "2026-09-15T11:00:53.078Z",
    "dateReserved": "2026-09-15T10:42:44.369Z",
    "dateUpdated": "2026-09-15T12:19:39.773Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

GHSA-W7QQ-X87W-72QX

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

Tags

Sightings

Nomenclature