Vulnerability-Lookup

BREW-TACH-CVE-2026-76221 (GHSA-JM78-9FVV-MHGR)

Vulnerability from osv_homebrew – Published: 2026-08-20 09:45 – Updated: 2026-09-17 18:35 – Source website

Summary

GitPython: git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged core.sshCommand/hooksPath (RCE)

Details

Summary

GitPython's config-name validator only neutralizes CR/LF/NUL for the "option" label; it does not reject =, #, ;, [, ], or whitespace in an option name. write_section writes the option name verbatim into the config file, so an option name such as sshCommand = touch <cmd> # is written as \tsshCommand = touch <cmd> # = <value>, which git parses as core.sshCommand = touch <cmd> (the trailing # comments out the intended value). This forges arbitrary config directives (core.sshCommand, core.hooksPath, alias.*) → RCE on the next git operation. This is a distinct field (option name, not section name) and distinct character class (=/#/space, not newline/bracket) from GHSA-3rp5-jjmw-4wv2 (section-name bracket injection) and GHSA-mv93-w799-cj2w / GHSA-v87r-6q3f-2j67 (newline injection).

Root Cause

_assure_config_name_safe(name, label) (git/config.py:897) applies the bracket/quote state machine ONLY when label == "section"; for the "option" label it falls through with just the UNSAFE_CONFIG_CHARS_RE = [\r\n\x00] regex. write_section then writes the option name verbatim into "\t%s = %s\n" (config.py:702).

Impact

Arbitrary git-config directive injection → remote code execution via core.sshCommand (fires on any ssh git operation, no staged file needed) or core.hooksPath (with a staged hook). Requires the embedding application to forward a caller-influenced OPTION NAME into the config writer (name-control model, the same name-control model accepted by the related published advisories GHSA-3rp5-jjmw-4wv2 and GHSA-mv93-w799-cj2w). Default configuration.

Proof of Concept

with repo.config_writer() as cw:
    cw.set_value("core", "sshCommand = touch /tmp/RCE #", "x")
# git config --get core.sshCommand  ->  touch /tmp/RCE

Attack Chain

Entry: app calls config writer with attacker-controlled OPTION name: set_value("core", "sshCommand = touch /tmp/RCE #", "x").
Check: _assure_config_name_safe(option, "option") @ config.py. Guard: regex matches only [\r\n\x00]; bracket/quote state machine is gated on label=="section". Bypass proof: =,#,space pass → no ValueError.
Sink: write_section writes "\tsshCommand = touch /tmp/RCE # = x\n" (config.py:702).
Impact: git parses core.sshCommand=touch /tmp/RCE → arbitrary code execution on next git op.

Bypass Evidence

Independently reproduced (gate harness): set_value('core','sshCommand = touch <RCE> #','x') → no ValueError; file line sshCommand = touch <RCE> # = x; git config --get core.sshCommand → touch <RCE> (rc=0). Also verified core.hooksPath via both GitConfigParser and repo.config_writer(). Fix-commit read: bracket/quote checks are inside if label == "section"; the "option" label is not covered.

Affected Versions

GitPython <= 3.1.57 (validator present verbatim on the latest release tag).

Suggested Fix

Apply the section-name safety checks (reject =, #, ;, [, ], whitespace) to the "option" label as well, or validate the fully-rendered config line after substitution.

Reported by zx (Jace) — GitHub: @manus-use

Severity

8.8 (High)


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

References

URL

Type

	https://github.com/gitpython-developers/GitPython…	WEB
	https://github.com/gitpython-developers/GitPython…	WEB
	https://github.com/gitpython-developers/GitPython…	WEB
	https://github.com/gitpython-developers/GitPython	PACKAGE
	https://github.com/gitpython-developers/GitPython…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "resource": "gitpython",
        "resource_purl": "pkg:pypi/gitpython@3.1.62",
        "upstream_fixed_in": "3.1.58"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "tach",
        "purl": "pkg:brew/tach"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.19.7"
            },
            {
              "fixed": "0.35.0_4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/gitpython@3.1.62",
        "name": "gitpython",
        "resource": "gitpython",
        "strategy": "registry",
        "subject_version": "3.1.62"
      }
    ]
  },
  "details": "## Summary\nGitPython\u0027s config-name validator only neutralizes CR/LF/NUL for the `\"option\"` label; it does not reject `=`, `#`, `;`, `[`, `]`, or whitespace in an **option name**. `write_section` writes the option name verbatim into the config file, so an option name such as `sshCommand = touch \u003ccmd\u003e #` is written as `\\tsshCommand = touch \u003ccmd\u003e # = \u003cvalue\u003e`, which git parses as `core.sshCommand = touch \u003ccmd\u003e` (the trailing `#` comments out the intended value). This forges arbitrary config directives (`core.sshCommand`, `core.hooksPath`, `alias.*`) \u2192 RCE on the next git operation. This is a distinct field (option name, not section name) and distinct character class (`=`/`#`/space, not newline/bracket) from GHSA-3rp5-jjmw-4wv2 (section-name bracket injection) and GHSA-mv93-w799-cj2w / GHSA-v87r-6q3f-2j67 (newline injection).\n\n## Root Cause\n`_assure_config_name_safe(name, label)` (`git/config.py:897`) applies the bracket/quote state machine ONLY when `label == \"section\"`; for the `\"option\"` label it falls through with just the `UNSAFE_CONFIG_CHARS_RE = [\\r\\n\\x00]` regex. `write_section` then writes the option name verbatim into `\"\\t%s = %s\\n\"` (config.py:702).\n\n## Impact\nArbitrary git-config directive injection \u2192 remote code execution via `core.sshCommand` (fires on any ssh git operation, no staged file needed) or `core.hooksPath` (with a staged hook). Requires the embedding application to forward a caller-influenced OPTION NAME into the config writer (name-control model, the same name-control model accepted by the related published advisories GHSA-3rp5-jjmw-4wv2 and GHSA-mv93-w799-cj2w). Default configuration.\n\n## Proof of Concept\n```python\nwith repo.config_writer() as cw:\n    cw.set_value(\"core\", \"sshCommand = touch /tmp/RCE #\", \"x\")\n# git config --get core.sshCommand  -\u003e  touch /tmp/RCE\n```\n\n## Attack Chain\n1. Entry: app calls config writer with attacker-controlled OPTION name: `set_value(\"core\", \"sshCommand = touch /tmp/RCE #\", \"x\")`.\n2. Check: `_assure_config_name_safe(option, \"option\")` @ config.py. Guard: regex matches only `[\\r\\n\\x00]`; bracket/quote state machine is gated on `label==\"section\"`. Bypass proof: `=`,`#`,space pass \u2192 no `ValueError`.\n3. Sink: `write_section` writes `\"\\tsshCommand = touch /tmp/RCE # = x\\n\"` (config.py:702).\n4. Impact: git parses `core.sshCommand=touch /tmp/RCE` \u2192 arbitrary code execution on next git op.\n\n## Bypass Evidence\nIndependently reproduced (gate harness): `set_value(\u0027core\u0027,\u0027sshCommand = touch \u003cRCE\u003e #\u0027,\u0027x\u0027)` \u2192 no `ValueError`; file line `sshCommand = touch \u003cRCE\u003e # = x`; `git config --get core.sshCommand` \u2192 `touch \u003cRCE\u003e` (rc=0). Also verified `core.hooksPath` via both `GitConfigParser` and `repo.config_writer()`. Fix-commit read: bracket/quote checks are inside `if label == \"section\"`; the `\"option\"` label is not covered.\n\n## Affected Versions\n`GitPython \u003c= 3.1.57` (validator present verbatim on the latest release tag).\n\n## Suggested Fix\nApply the section-name safety checks (reject `=`, `#`, `;`, `[`, `]`, whitespace) to the `\"option\"` label as well, or validate the fully-rendered config line after substitution.\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
  "id": "BREW-tach-CVE-2026-76221",
  "modified": "2026-09-17T18:35:56Z",
  "published": "2026-08-20T09:45:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-jm78-9fvv-mhgr"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/pull/2204"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/commit/a495ccd3b547ccd60b2187215823b72a9c0188bf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gitpython-developers/GitPython"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.58"
    }
  ],
  "schema_version": "1.7.3",
  "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: git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged core.sshCommand/hooksPath (RCE)",
  "upstream": [
    "GHSA-jm78-9fvv-mhgr",
    "CVE-2026-76221",
    "PYSEC-2026-3783"
  ]
}

CVE-2026-76221 (GCVE-0-2026-76221)

Vulnerability from cvelistv5 – Published: 2026-08-19 14:02 – Updated: 2026-08-20 18:29

Title

GitPython before 3.1.58 Config Injection via option-name

Summary

GitPython before 3.1.58 contains a config-name injection vulnerability in the option-name validator that allows attackers to forge arbitrary git-config directives by injecting equals signs, hash symbols, and whitespace into option names. Attackers can inject malicious option names like 'sshCommand = touch /tmp/RCE #' to execute arbitrary commands via core.sshCommand or core.hooksPath on the next git operation.

Severity

8.7 (High)


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

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-20 03:56 UTC

CWE

CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('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
gitpython-developers	GitPython	Affected: 0 , < 3.1.58 (semver) Unaffected: 3.1.58 (semver) cpe:2.3:a:gitpython_project:gitpython::::::::

Date Public

2026-08-04 00:00

Credits

manus-use

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-76221",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-20T03:56:33.973931Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2026-08-20T18:29:55.778Z",
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "packageURL": "pkg:pypi/GitPython",
          "product": "GitPython",
          "vendor": "gitpython-developers",
          "versions": [
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              "lessThan": "3.1.58",
              "status": "affected",
              "version": "0",
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      "cpeApplicability": [
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          "nodes": [
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      "credits": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "GitPython before 3.1.58 contains a config-name injection vulnerability in the option-name validator that allows attackers to forge arbitrary git-config directives by injecting equals signs, hash symbols, and whitespace into option names. Attackers can inject malicious option names like \u0027sshCommand = touch /tmp/RCE #\u0027 to execute arbitrary commands via core.sshCommand or core.hooksPath on the next git operation."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
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            "baseSeverity": "HIGH",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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      "problemTypes": [
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          "descriptions": [
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      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-jm78-9fvv-mhgr)",
          "tags": [
            "vendor-advisory"
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          "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-jm78-9fvv-mhgr"
        },
        {
          "name": "VulnCheck Advisory: GitPython before 3.1.58 Config Injection via option-name",
          "tags": [
            "third-party-advisory"
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          "url": "https://www.vulncheck.com/advisories/gitpython-before-config-injection-via-option-name"
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      "title": "GitPython before 3.1.58 Config Injection via option-name",
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
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    "datePublished": "2026-08-19T14:02:04.795Z",
    "dateReserved": "2026-08-19T11:35:13.689Z",
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    "state": "PUBLISHED"
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}

GHSA-JM78-9FVV-MHGR

Vulnerability from github – Published: 2026-08-07 15:46 – Updated: 2026-08-07 15:46

Summary

GitPython: git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged core.sshCommand/hooksPath (RCE)

Details

Summary

Root Cause

Impact

Proof of Concept

with repo.config_writer() as cw:
    cw.set_value("core", "sshCommand = touch /tmp/RCE #", "x")
# git config --get core.sshCommand  ->  touch /tmp/RCE

Attack Chain

Entry: app calls config writer with attacker-controlled OPTION name: set_value("core", "sshCommand = touch /tmp/RCE #", "x").
Check: _assure_config_name_safe(option, "option") @ config.py. Guard: regex matches only [\r\n\x00]; bracket/quote state machine is gated on label=="section". Bypass proof: =,#,space pass → no ValueError.
Sink: write_section writes "\tsshCommand = touch /tmp/RCE # = x\n" (config.py:702).
Impact: git parses core.sshCommand=touch /tmp/RCE → arbitrary code execution on next git op.

Bypass Evidence

Affected Versions

GitPython <= 3.1.57 (validator present verbatim on the latest release tag).

Suggested Fix

Apply the section-name safety checks (reject =, #, ;, [, ], whitespace) to the "option" label as well, or validate the fully-rendered config line after substitution.

Reported by zx (Jace) — GitHub: @manus-use

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": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.1.57"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "GitPython"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.58"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-74",
      "CWE-88"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-07T15:46:35Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\nGitPython\u0027s config-name validator only neutralizes CR/LF/NUL for the `\"option\"` label; it does not reject `=`, `#`, `;`, `[`, `]`, or whitespace in an **option name**. `write_section` writes the option name verbatim into the config file, so an option name such as `sshCommand = touch \u003ccmd\u003e #` is written as `\\tsshCommand = touch \u003ccmd\u003e # = \u003cvalue\u003e`, which git parses as `core.sshCommand = touch \u003ccmd\u003e` (the trailing `#` comments out the intended value). This forges arbitrary config directives (`core.sshCommand`, `core.hooksPath`, `alias.*`) \u2192 RCE on the next git operation. This is a distinct field (option name, not section name) and distinct character class (`=`/`#`/space, not newline/bracket) from GHSA-3rp5-jjmw-4wv2 (section-name bracket injection) and GHSA-mv93-w799-cj2w / GHSA-v87r-6q3f-2j67 (newline injection).\n\n## Root Cause\n`_assure_config_name_safe(name, label)` (`git/config.py:897`) applies the bracket/quote state machine ONLY when `label == \"section\"`; for the `\"option\"` label it falls through with just the `UNSAFE_CONFIG_CHARS_RE = [\\r\\n\\x00]` regex. `write_section` then writes the option name verbatim into `\"\\t%s = %s\\n\"` (config.py:702).\n\n## Impact\nArbitrary git-config directive injection \u2192 remote code execution via `core.sshCommand` (fires on any ssh git operation, no staged file needed) or `core.hooksPath` (with a staged hook). Requires the embedding application to forward a caller-influenced OPTION NAME into the config writer (name-control model, the same name-control model accepted by the related published advisories GHSA-3rp5-jjmw-4wv2 and GHSA-mv93-w799-cj2w). Default configuration.\n\n## Proof of Concept\n```python\nwith repo.config_writer() as cw:\n    cw.set_value(\"core\", \"sshCommand = touch /tmp/RCE #\", \"x\")\n# git config --get core.sshCommand  -\u003e  touch /tmp/RCE\n```\n\n## Attack Chain\n1. Entry: app calls config writer with attacker-controlled OPTION name: `set_value(\"core\", \"sshCommand = touch /tmp/RCE #\", \"x\")`.\n2. Check: `_assure_config_name_safe(option, \"option\")` @ config.py. Guard: regex matches only `[\\r\\n\\x00]`; bracket/quote state machine is gated on `label==\"section\"`. Bypass proof: `=`,`#`,space pass \u2192 no `ValueError`.\n3. Sink: `write_section` writes `\"\\tsshCommand = touch /tmp/RCE # = x\\n\"` (config.py:702).\n4. Impact: git parses `core.sshCommand=touch /tmp/RCE` \u2192 arbitrary code execution on next git op.\n\n## Bypass Evidence\nIndependently reproduced (gate harness): `set_value(\u0027core\u0027,\u0027sshCommand = touch \u003cRCE\u003e #\u0027,\u0027x\u0027)` \u2192 no `ValueError`; file line `sshCommand = touch \u003cRCE\u003e # = x`; `git config --get core.sshCommand` \u2192 `touch \u003cRCE\u003e` (rc=0). Also verified `core.hooksPath` via both `GitConfigParser` and `repo.config_writer()`. Fix-commit read: bracket/quote checks are inside `if label == \"section\"`; the `\"option\"` label is not covered.\n\n## Affected Versions\n`GitPython \u003c= 3.1.57` (validator present verbatim on the latest release tag).\n\n## Suggested Fix\nApply the section-name safety checks (reject `=`, `#`, `;`, `[`, `]`, whitespace) to the `\"option\"` label as well, or validate the fully-rendered config line after substitution.\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
  "id": "GHSA-jm78-9fvv-mhgr",
  "modified": "2026-08-07T15:46:35Z",
  "published": "2026-08-07T15:46:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-jm78-9fvv-mhgr"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/pull/2204"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/commit/a495ccd3b547ccd60b2187215823b72a9c0188bf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gitpython-developers/GitPython"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.58"
    }
  ],
  "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: git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged core.sshCommand/hooksPath (RCE)"
}

PYSEC-2026-3783

Vulnerability from pysec - Published: 2026-08-19 14:17 - Updated: 2026-09-03 10:37

Details

Severity

8.7 (High)


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

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": "3.1.58"
            }
          ],
          "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",
        "3.1.49",
        "3.1.5",
        "3.1.50",
        "3.1.51",
        "3.1.52",
        "3.1.53",
        "3.1.54",
        "3.1.55",
        "3.1.56",
        "3.1.57",
        "3.1.6",
        "3.1.7",
        "3.1.8",
        "3.1.9"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-76221",
    "GHSA-jm78-9fvv-mhgr"
  ],
  "details": "GitPython before 3.1.58 contains a config-name injection vulnerability in the option-name validator that allows attackers to forge arbitrary git-config directives by injecting equals signs, hash symbols, and whitespace into option names. Attackers can inject malicious option names like \u0027sshCommand = touch /tmp/RCE #\u0027 to execute arbitrary commands via core.sshCommand or core.hooksPath on the next git operation.",
  "id": "PYSEC-2026-3783",
  "modified": "2026-09-03T10:37:09.778369Z",
  "published": "2026-08-19T14:17:48.463Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/gitpython-before-config-injection-via-option-name"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-jm78-9fvv-mhgr"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/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"
    }
  ]
}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BREW-TACH-CVE-2026-76221 (GHSA-JM78-9FVV-MHGR)

Summary

Root Cause

Impact

Proof of Concept

Attack Chain

Bypass Evidence

Affected Versions

Suggested Fix

CVE-2026-76221 (GCVE-0-2026-76221)

GHSA-JM78-9FVV-MHGR

Summary

Root Cause

Impact

Proof of Concept

Attack Chain

Bypass Evidence

Affected Versions

Suggested Fix

PYSEC-2026-3783

Tags

Sightings

Nomenclature

Related by attack behaviour