UBUNTU-CVE-2026-40034

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Source
https://ubuntu.com/security/CVE-2026-40034
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40034.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-40034
Upstream
  • CVE-2026-40034
Published
2026-05-26T15:16:00Z
Modified
2026-06-03T13:41:16.175790885Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • 8.5 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:25.10 / rust-gix

Package

Name
rust-gix
Purl
pkg:deb/ubuntu/rust-gix?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.69.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-gix-dev",
            "binary_version": "0.69.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40034.json"

Ubuntu:25.10 / rust-gix-submodule

Package

Name
rust-gix-submodule
Purl
pkg:deb/ubuntu/rust-gix-submodule?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.16.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-gix-submodule-dev",
            "binary_version": "0.16.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40034.json"

Ubuntu:26.04:LTS / rust-gix

Package

Name
rust-gix
Purl
pkg:deb/ubuntu/rust-gix?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.69.1-1
0.69.1-2
0.73.0-1
0.73.0-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-gix-dev",
            "binary_version": "0.73.0-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40034.json"

Ubuntu:26.04:LTS / rust-gix-submodule

Package

Name
rust-gix-submodule
Purl
pkg:deb/ubuntu/rust-gix-submodule?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.16.0-1
0.20.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librust-gix-submodule-dev",
            "binary_version": "0.20.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40034.json"