Vulnerability-Lookup

GHSA-M4F9-C775-WG56

Vulnerability from github – Published: 2026-05-26 15:32 – Updated: 2026-05-26 15:32

Details

gix-submodule before 0.82.0 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.

Severity

7.8 (High)


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

8.5 (High)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-40034"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-26T15:16:35Z",
    "severity": "HIGH"
  },
  "details": "gix-submodule before 0.82.0 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.",
  "id": "GHSA-m4f9-c775-wg56",
  "modified": "2026-05-26T15:32:10Z",
  "published": "2026-05-26T15:32:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f26g-jm89-4g65"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40034"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide/commit/6a2e6a436f76c8bbf2487f9967413a51356667a0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide/commit/dd5c18d9e526e8de462fa40aa047acd097cfa7dc"
    },
    {
      "type": "WEB",
      "url": "https://red.anthropic.com/2026/cvd/findings/ANT-2026-6SNS6KMP"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/gitoxide-command-injection-via-partial-gitmodules-override-in-gix-submodule"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/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"
    }
  ]
}

CVE-2026-40034 (GCVE-0-2026-40034)

Vulnerability from cvelistv5 – Published: 2026-05-26 14:08 – Updated: 2026-05-28 16:56

Title

gitoxide - Command Injection via Partial .gitmodules Override in gix-submodule

Summary

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.

Severity

7.3 (High)


                        
                          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

7.8 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

Assigner

VulnCheck

References

5 references

URL	Tags
https://github.com/GitoxideLabs/gitoxide/security…	vendor-advisory
https://github.com/GitoxideLabs/gitoxide/commit/6…	patch
https://github.com/GitoxideLabs/gitoxide/commit/d…	patch
https://red.anthropic.com/2026/cvd/findings/ANT-2…	third-party-advisory
https://www.vulncheck.com/advisories/gitoxide-com…	third-party-advisory

Impacted products

3 products

Vendor	Product	Version
gitoxide	gitoxide	Affected: 0 , < 0.5.21 (semver) Unaffected: 0.5.21 (semver)
gitoxide	gix-submodule	Affected: 0 , < 0.29.0 (semver) Unaffected: 0.29.0 (semver)
gitoxide	gix	Affected: 0 , < 0.84.0 (semver) Unaffected: 0.84.0 (semver)

Date Public

2026-04-25 00:00

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-40034",
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                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2026-05-26T15:00:27.629890Z",
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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.

Action not permitted

GHSA-M4F9-C775-WG56

CVE-2026-40034 (GCVE-0-2026-40034)

Tags

Sightings

Nomenclature