CVE-2026-16492 in umi
Summary
by MITRE • 07/22/2026
A weakness has been identified in umijs umi up to 4.6.63. The affected element is the function git.getFileCreateInfo of the file packages/utils/src/getFileGitIno.ts of the component GIT File Helper. This manipulation causes os command injection. The exploit has been made available to the public and could be used for attacks. Upgrading to version 4.6.64 is sufficient to fix this issue. Patch name: b6da12c17b024a43badb1fa565720c38cf42e647. Upgrading the affected component is advised.
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Analysis
by VulDB Data Team • 07/22/2026
The vulnerability identified in umijs umi version 4.6.63 represents a critical command injection flaw within the GIT File Helper component that poses significant security risks to affected systems. This weakness exists specifically in the git.getFileCreateInfo function located in packages/utils/src/getFileGitIno.ts, where improper input validation allows malicious actors to inject operating system commands through crafted file names or Git metadata. The vulnerability stems from inadequate sanitization of user-supplied data when processing Git file information, creating an attack surface that enables arbitrary command execution on the underlying system.
The technical implementation of this flaw demonstrates a classic OS command injection vulnerability where the application fails to properly escape or validate inputs before incorporating them into system calls. When the git.getFileCreateInfo function processes file information from Git repositories, it likely constructs shell commands using unvalidated user input without appropriate sanitization measures. This allows attackers to inject malicious commands that get executed with the privileges of the process running the umijs application, potentially leading to complete system compromise.
The operational impact of this vulnerability extends beyond simple command execution, as it provides attackers with the capability to escalate privileges and access sensitive data within the affected environment. Given that the exploit has been made publicly available, the risk of exploitation is significantly elevated, making this a high-priority issue for organizations using affected versions of umijs. The vulnerability affects any system where umijs processes Git repository information, particularly web applications that integrate with Git workflows or perform automated Git operations during build or deployment processes.
Security professionals should immediately implement the recommended mitigation by upgrading to version 4.6.64, which includes a patch addressing this specific command injection vulnerability. The patch reference b6da12c17b024a43badb1fa565720c38cf42e647 contains the necessary code modifications to properly sanitize inputs and prevent command injection attacks. Organizations should also consider implementing additional defensive measures such as input validation at multiple layers, privilege separation for Git operations, and monitoring for suspicious command execution patterns.
This vulnerability aligns with CWE-78, which specifically addresses OS Command Injection, and represents a clear violation of secure coding practices that should be addressed through proper input sanitization and parameterized command execution. From an ATT&CK framework perspective, this weakness maps to technique T1059.003 for command and scripting interpreter, where adversaries use legitimate system tools to execute malicious commands. The remediation process should include thorough testing of the patched version to ensure that Git file processing functionality remains intact while eliminating the command injection vector that previously existed in the application's Git helper component.