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CVE-2026-40034

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CVE-2026-40034

Published: May 26, 2026

Modified: May 28, 2026

PUBLISHED

CVSS v3.1

7.8

HIGH

Description

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.

VendorProductVersions

gitoxide

gitoxide

affected
0 - < 0.5.21
unaffected
0.5.21

gitoxide

gix-submodule

affected
0 - < 0.29.0
unaffected
0.29.0

gitoxide

gix

affected
0 - < 0.84.0
unaffected
0.84.0

Weaknesses (CWE)

CWE-77

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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