PYSEC-2026-1127

Vulnerability from pysec - Published: 2026-07-07 11:45 - Updated: 2026-07-07 17:23
VLAI
Details

subprocess call with shell=True identified, security issue.

Code

On file src/ansys/geometry/core/connection/product_instance.py:

403 def _start_program(args: List[str], local_env: Dict[str, str]) -> subprocess.Popen:
404     """
405     Start the program where the path is the first item of the ``args`` array argument.
406
407     Parameters
408     ----------
409     args : List[str]
410         List of arguments to be passed to the program. The first list's item shall
411         be the program path.
412     local_env : Dict[str,str]
413         Environment variables to be passed to the program.
414
415     Returns
416     -------
417     subprocess.Popen
418         The subprocess object.
419     """
420      return subprocess.Popen(
421         args,
422         shell=os.name != "nt",
423         stdin=subprocess.DEVNULL,
424         stdout=subprocess.DEVNULL,
425         stderr=subprocess.DEVNULL,
426         env=local_env,
427      )
428 
429

Upon calling this method _start_program directly, users could exploit its usage to perform malicious operations on the current machine where the script is ran. With this resolution made through #1076 and #1077, we make sure that this method is only called from within the library and we are no longer enabling the shell=True option.

CWE - 78

For more information see https://cwe.mitre.org/data/definitions/78.html

More information

Visit https://bandit.readthedocs.io/en/1.7.8/plugins/b602_subprocess_popen_with_shell_equals_true.html to find out more information.

Severity
7.4 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Impacted products
Name purl
ansys-geometry-core pkg:pypi/ansys-geometry-core
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ansys-geometry-core",
        "purl": "pkg:pypi/ansys-geometry-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.3.0"
            },
            {
              "fixed": "0.3.3"
            },
            {
              "introduced": "0.4.0"
            },
            {
              "fixed": "0.4.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3.0",
        "0.3.1",
        "0.3.2",
        "0.4.0",
        "0.4.1",
        "0.4.10",
        "0.4.11",
        "0.4.2",
        "0.4.3",
        "0.4.4",
        "0.4.5",
        "0.4.6",
        "0.4.7",
        "0.4.8",
        "0.4.9"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-29189",
    "GHSA-38jr-29fh-w9vm"
  ],
  "details": "subprocess call with shell=True identified, security issue.\n\n#### Code\n\nOn file [src/ansys/geometry/core/connection/product_instance.py](https://github.com/ansys/pyansys-geometry/blob/52cba1737a8a7812e5430099f715fa2160ec007b/src/ansys/geometry/core/connection/product_instance.py#L403-L428):\n\n```\n403 def _start_program(args: List[str], local_env: Dict[str, str]) -\u003e subprocess.Popen:\n404     \"\"\"\n405     Start the program where the path is the first item of the ``args`` array argument.\n406\n407     Parameters\n408     ----------\n409     args : List[str]\n410         List of arguments to be passed to the program. The first list\u0027s item shall\n411         be the program path.\n412     local_env : Dict[str,str]\n413         Environment variables to be passed to the program.\n414\n415     Returns\n416     -------\n417     subprocess.Popen\n418         The subprocess object.\n419     \"\"\"\n420      return subprocess.Popen(\n421         args,\n422         shell=os.name != \"nt\",\n423         stdin=subprocess.DEVNULL,\n424         stdout=subprocess.DEVNULL,\n425         stderr=subprocess.DEVNULL,\n426         env=local_env,\n427      )\n428 \n429 \n\n```\n\nUpon calling this method ``_start_program`` directly, users could exploit its usage to perform malicious operations on the current machine where the script is ran. With this resolution made through #1076 and #1077, we make sure that this method is only called from within the library and we are no longer enabling the ``shell=True`` option.\n\n#### CWE - 78\n\nFor more information see https://cwe.mitre.org/data/definitions/78.html\n\n#### More information\n\nVisit https://bandit.readthedocs.io/en/1.7.8/plugins/b602_subprocess_popen_with_shell_equals_true.html to find out more information.",
  "id": "PYSEC-2026-1127",
  "modified": "2026-07-07T17:23:40.403919Z",
  "published": "2026-07-07T11:45:36.419888Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ansys/pyansys-geometry/security/advisories/GHSA-38jr-29fh-w9vm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-29189"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansys/pyansys-geometry/pull/1076"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansys/pyansys-geometry/pull/1077"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansys/pyansys-geometry/commit/902071701c4f3a8258cbaa46c28dc0a65442d1bc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansys/pyansys-geometry/commit/f82346b9432b06532e84f3278125f5879b4e9f3f"
    },
    {
      "type": "WEB",
      "url": "https://bandit.readthedocs.io/en/1.7.8/plugins/b602_subprocess_popen_with_shell_equals_true.html"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ansys/pyansys-geometry"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ansys/pyansys-geometry/blob/52cba1737a8a7812e5430099f715fa2160ec007b/src/ansys/geometry/core/connection/product_instance.py#L403-L428"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/ansys-geometry-core"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-38jr-29fh-w9vm"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ansys-geometry-core OS Command Injection vulnerability"
}



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