CVE-2026-40034

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.

Affected Software

VendorProductVersion RangeStatus
gitoxidegitoxide0 < 0.5.21affected
gitoxidegitoxide0.5.21unaffected
gitoxidegix-submodule0 < 0.29.0affected
gitoxidegix-submodule0.29.0unaffected
gitoxidegix0 < 0.84.0affected
gitoxidegix0.84.0unaffected

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

Additional References

References