Vulnerability-Lookup

CVE-2026-87817 (GCVE-0-2026-87817)

Vulnerability from cvelistv5 – Published: 2026-09-09 11:21 – Updated: 2026-09-10 14:58

Title

GitPython before 3.1.60 Remote Code Execution via Git Directory Impersonation

Summary

GitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersonate the git directory using tracked files like gitdir, commondir, and HEAD. Attackers can execute arbitrary code by placing a malicious pre-commit hook in the tracked hooks directory that executes when a victim calls index.commit() on a cloned or opened repository.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

8.8 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 14:27 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/gitpython-developers/GitPython…	vendor-advisory
https://www.vulncheck.com/advisories/gitpython-be…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
gitpython-developers	GitPython	Affected: 0 , < 3.1.60 (semver) Unaffected: 3.1.60 (semver) cpe:2.3:a:gitpython_project:gitpython::::::::

Date Public

2026-08-26 00:00

Credits

dharanivarma

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-87817

Vulnerability from fkie_nvd - Published: 2026-09-09 12:17 - Updated: 2026-09-10 15:17

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-239g-whfq-7xj9
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/gitpython-before-3.1.60-remote-code-execution-via-git-directory-impersonation

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "packageURL": "pkg:pypi/GitPython",
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}

GHSA-2PXQ-5VCG-RQ29

Vulnerability from github – Published: 2026-09-09 12:32 – Updated: 2026-09-09 12:32

Details

Severity

8.8 (High)


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

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-87817"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-09T12:17:16Z",
    "severity": "HIGH"
  },
  "details": "GitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersonate the git directory using tracked files like gitdir, commondir, and HEAD. Attackers can execute arbitrary code by placing a malicious pre-commit hook in the tracked hooks directory that executes when a victim calls index.commit() on a cloned or opened repository.",
  "id": "GHSA-2pxq-5vcg-rq29",
  "modified": "2026-09-09T12:32:15Z",
  "published": "2026-09-09T12:32:15Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-239g-whfq-7xj9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87817"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/gitpython-before-3.1.60-remote-code-execution-via-git-directory-impersonation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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"
    }
  ]
}

ubuntu-cve-2026-87817

Vulnerability from osv_ubuntu

Published

2026-09-10 00:00

Modified

2026-09-11 12:45

Summary

Details

(GitPython before 3.1.60 fails to properly validate the git directory l ...)

Severity

8.8 (High)


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

8.7 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-87817	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-87817	REPORT
	https://github.com/gitpython-developers/GitPython…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-git",
            "binary_version": "0.3.2~RC1-3ubuntu0.1~esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "python-git",
        "purl": "pkg:deb/ubuntu/python-git@0.3.2~RC1-3ubuntu0.1~esm3?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3.2~RC1-2",
        "0.3.2~RC1-3",
        "0.3.2~RC1-3ubuntu0.1~esm1",
        "0.3.2~RC1-3ubuntu0.1~esm2",
        "0.3.2~RC1-3ubuntu0.1~esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-git",
            "binary_version": "1.0.1+git137-gc8b8379-2.1ubuntu0.1~esm4"
          },
          {
            "binary_name": "python3-git",
            "binary_version": "1.0.1+git137-gc8b8379-2.1ubuntu0.1~esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "python-git",
        "purl": "pkg:deb/ubuntu/python-git@1.0.1+git137-gc8b8379-2.1ubuntu0.1~esm4?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.1+git137-gc8b8379-1",
        "1.0.1+git137-gc8b8379-2",
        "1.0.1+git137-gc8b8379-2.1",
        "1.0.1+git137-gc8b8379-2.1ubuntu0.1~esm1",
        "1.0.1+git137-gc8b8379-2.1ubuntu0.1~esm2",
        "1.0.1+git137-gc8b8379-2.1ubuntu0.1~esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-git",
            "binary_version": "2.1.8-1ubuntu0.1~esm4"
          },
          {
            "binary_name": "python3-git",
            "binary_version": "2.1.8-1ubuntu0.1~esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "python-git",
        "purl": "pkg:deb/ubuntu/python-git@2.1.8-1ubuntu0.1~esm4?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.5-1",
        "2.1.6-1",
        "2.1.7-1",
        "2.1.8-1",
        "2.1.8-1ubuntu0.1~esm1",
        "2.1.8-1ubuntu0.1~esm2",
        "2.1.8-1ubuntu0.1~esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-git",
            "binary_version": "3.0.7-1ubuntu0.1~esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "python-git",
        "purl": "pkg:deb/ubuntu/python-git@3.0.7-1ubuntu0.1~esm4?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.11-1",
        "3.0.4-1",
        "3.0.5-1",
        "3.0.7-1",
        "3.0.7-1ubuntu0.1~esm1",
        "3.0.7-1ubuntu0.1~esm2",
        "3.0.7-1ubuntu0.1~esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-git",
            "binary_version": "3.1.24-1ubuntu0.1~esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "python-git",
        "purl": "pkg:deb/ubuntu/python-git@3.1.24-1ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.14-1",
        "3.1.23-1",
        "3.1.24-1",
        "3.1.24-1ubuntu0.1~esm1",
        "3.1.24-1ubuntu0.1~esm2",
        "3.1.24-1ubuntu0.1~esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-git",
            "binary_version": "3.1.37-3ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "python-git",
        "purl": "pkg:deb/ubuntu/python-git@3.1.37-3ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.30-1",
        "3.1.37-1",
        "3.1.37-3",
        "3.1.37-3ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-git",
            "binary_version": "3.1.46-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "python-git",
        "purl": "pkg:deb/ubuntu/python-git@3.1.46-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.44-1",
        "3.1.45-1",
        "3.1.46-1",
        "3.1.46-1ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "(GitPython before 3.1.60 fails to properly validate the git directory l ...)",
  "id": "UBUNTU-CVE-2026-87817",
  "modified": "2026-09-11T12:45:48Z",
  "published": "2026-09-10T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-87817"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-87817"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-239g-whfq-7xj9"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-87817"
  ]
}

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

CVE-2026-87817 (GCVE-0-2026-87817)

FKIE_CVE-2026-87817

GHSA-2PXQ-5VCG-RQ29

ubuntu-cve-2026-87817

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature