CVE-2026-40034

gix-submodule before 0.29.0 (gitoxide before 0.5.21, gix before 0.84.0) incorrectly validates the update field in .gitmodules, allowing attackers to bypass the CommandForbiddenInModulesConfiguration guard when a submodule has been initialized with only partial configuration in .git/config. An attacker can inject arbitrary shell commands via the update field in .gitmodules that will be executed when Submodule::update() is called on a previously-initialized submodule, enabling remote code execution.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/GitoxideLabs/gitoxide/commit/6a2e6a436f76c8bbf2487f9967413a51356667a0
https://github.com/GitoxideLabs/gitoxide/commit/dd5c18d9e526e8de462fa40aa047acd097cfa7dc
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f26g-jm89-4g65
https://red.anthropic.com/2026/cvd/findings/ANT-2026-6SNS6KMP
https://www.vulncheck.com/advisories/gitoxide-command-injection-via-partial-gitmodules-override-in-gix-submodule
https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f26g-jm89-4g65

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-26 15:16

Updated : 2026-07-24 11:10

NVD link : CVE-2026-40034

Mitre link : CVE-2026-40034

CVE.ORG link : CVE-2026-40034

JSON object : View

Products Affected

No product.

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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An attacker can inject arbitrary shell commands via the update field in .gitmodules that will be executed when Submodule::update() is called on a previously-initialized submodule, enabling remote code execution."}, {"lang": "es", "value": "gix-submodule antes de 0.82.0 valida incorrectamente el campo update en .gitmodules, permitiendo a los atacantes eludir la protecci\u00f3n CommandForbiddenInModulesConfiguration cuando un subm\u00f3dulo ha sido inicializado con solo una configuraci\u00f3n parcial en .git/config. Un atacante puede inyectar comandos de shell arbitrarios a trav\u00e9s del campo update en .gitmodules que se ejecutar\u00e1n cuando se llame a Submodule::update() en un subm\u00f3dulo previamente inicializado, lo que permite la ejecuci\u00f3n remota de c\u00f3digo."}], "lastModified": "2026-07-24T11:10:00.170", "sourceIdentifier": "disclosure@vulncheck.com"}