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CVE-2026-40034— gitoxide - Command Injection via Partial .gitmodules Override in gix-submodule

Quick assessment

Affected
gitoxide gitoxide
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

gitoxide是Sebastian Thiel个人开发者的一个用 Rust 编写的 git 实现。 gitoxide 0.82.0之前版本存在安全漏洞，该漏洞源于对.gitmodules中update字段的验证不当，可能导致攻击者绕过CommandForbiddenInModulesConfiguration防护，在调用Submodule::update时执行任意shell命令。

CVSS 7.8 · High EPSS 0.35% · P28

Affected Version Matrix 6

VendorProduct Version RangeStatus
gitoxide gitoxide < 0.5.21 affected
0.5.21 unaffected
gitoxide gix < 0.84.0 affected
0.84.0 unaffected
gitoxide gix-submodule < 0.29.0 affected
0.29.0 unaffected
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I. Basic Information for CVE-2026-40034

Vulnerability Information
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Vulnerability Title
gitoxide - Command Injection via Partial .gitmodules Override in gix-submodule
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
gitoxide 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
gitoxide是Sebastian Thiel个人开发者的一个用 Rust 编写的 git 实现。 gitoxide 0.82.0之前版本存在安全漏洞，该漏洞源于对.gitmodules中update字段的验证不当，可能导致攻击者绕过CommandForbiddenInModulesConfiguration防护，在调用Submodule::update时执行任意shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gitoxide gitoxide 0 ~ 0.5.21 -
gitoxide gix-submodule 0 ~ 0.29.0 -
gitoxide gix 0 ~ 0.84.0 -

II. Public POCs for CVE-2026-40034

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8195 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-40034

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Vendor Advisories for CVE-2026-40034 (3)

IV. Related Vulnerabilities

Same product: gitoxide
Same weakness: CWE-77

V. Comments for CVE-2026-40034

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