CVE-2026-16628 in oclif
Summary
by MITRE • 07/23/2026
A vulnerability was detected in oclif up to 4.23.16. Affected by this vulnerability is the function child_process.exec of the component JIT Plugin Entry Handler. Performing a manipulation of the argument jitPlugins results in os command injection. The attack is only possible with local access. The exploit is now public and may be used. The patch is named 939b045725e065baebc4587b8bccfd56731eed3d. To fix this issue, it is recommended to deploy a patch.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability identified in oclif version 4.23.16 represents a critical command injection flaw within the JIT Plugin Entry Handler component that leverages the child_process.exec function. This security weakness stems from improper input validation when processing the jitPlugins argument, creating an avenue for malicious command execution. The vulnerability specifically affects the JavaScript-based CLI framework's just-in-time plugin handling mechanism, which dynamically executes plugin code during runtime operations.
The technical exploitation of this vulnerability occurs through manipulation of the jitPlugins parameter, which allows attackers to inject arbitrary operating system commands that get executed via the child_process.exec function call. This command injection vulnerability is particularly dangerous because it enables an attacker to execute arbitrary code on the target system with the privileges of the process running oclif. The attack vector requires local access to the system where oclif is installed, making it a local privilege escalation or lateral movement threat within an environment. According to CWE standards, this maps to CWE-78, which specifically addresses OS Command Injection vulnerabilities, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter.
The operational impact of this vulnerability extends beyond simple code execution as it can enable attackers to bypass security controls, escalate privileges, or establish persistent access within compromised systems. Since the exploit is publicly available and actively being used, the risk exposure is immediate and significant for any organization using affected versions of oclif. The vulnerability affects development environments where oclif is used for CLI tool management, potentially allowing attackers to compromise development workflows or gain unauthorized access to source code repositories through compromised plugin installations.
Organizations should immediately implement the patch referenced as 939b045725e065baebc4587b8bccfd56731eed3d to remediate this vulnerability. The patch addresses the input validation issue in the JIT Plugin Entry Handler by properly sanitizing and escaping the jitPlugins argument before passing it to the child_process.exec function. Additionally, system administrators should consider implementing runtime monitoring for suspicious command execution patterns and review access controls to limit local system access where oclif is deployed. Security teams should also monitor for any potential exploitation attempts through log analysis and network traffic inspection to detect possible lateral movement or privilege escalation activities that may result from this vulnerability.
The broader implications of this vulnerability highlight the importance of secure coding practices in CLI frameworks, particularly when handling dynamic plugin execution. The flaw demonstrates how seemingly routine parameter processing can create critical security exposures, emphasizing the need for comprehensive input validation and proper command execution sanitization techniques. Organizations should conduct thorough assessments of their oclif installations and related development toolchains to identify any potential exposure points that could be exploited through similar vulnerabilities in other components or dependencies.