CVE-2026-19266 in context-engine
Summary
by MITRE • 08/08/2026
A vulnerability was determined in Kirachon context-engine up to 1.9.0. This affects the function execGitCommand of the file src/mcp/utils/gitUtils.ts of the component review-git-diff Endpoint. Executing a manipulation of the argument args can lead to command injection. Upgrading to version 1.9.1 mitigates this issue. This patch is called e0729dcfd3a2b1682a7bff86e7174852c03419ba. It is advisable to upgrade the affected component.
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Analysis
by VulDB Data Team • 08/08/2026
The vulnerability identified in Kirachon context-engine version 1.9.0 represents a critical command injection flaw within the review-git-diff endpoint functionality. This security weakness resides in the execGitCommand function located in src/mcp/utils/gitUtils.ts, where improper input validation allows attackers to manipulate command arguments and execute arbitrary code on the affected system. The vulnerability stems from insufficient sanitization of user-supplied parameters passed to Git commands, creating an avenue for malicious actors to escalate privileges and potentially compromise the entire system infrastructure.
The technical implementation of this flaw demonstrates a classic command injection vulnerability that aligns with CWE-78, which specifically addresses improper neutralization of special elements used in OS commands. The vulnerability occurs when the application directly incorporates user-provided input into Git command execution without adequate sanitization or parameter escaping mechanisms. Attackers can exploit this by crafting malicious arguments that contain shell metacharacters, allowing them to execute unintended system commands beyond the intended Git operations. This type of vulnerability falls under the MITRE ATT&CK framework's technique T1059.001 for Command and Scripting Interpreter, where adversaries leverage legitimate system utilities to execute malicious code.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it can enable attackers to gain unauthorized access to sensitive data, modify system configurations, or establish persistent backdoors within the environment. The review-git-diff endpoint specifically processes Git-related operations during code review workflows, making it a prime target for attackers seeking to compromise development environments or CI/CD pipelines. Successful exploitation could lead to source code theft, deployment of malicious code, or complete system takeover depending on the privileges of the affected service account.
The recommended mitigation strategy involves upgrading to version 1.9.1, which includes the patch e0729dcfd3a2b1682a7bff86e7174852c03419ba. This update implements proper input validation and sanitization mechanisms that prevent malicious command arguments from being executed. Organizations should also consider implementing additional security controls such as input parameter whitelisting, using secure coding practices for command execution, and conducting regular security assessments of their Git-based workflows. The patch addresses the root cause by ensuring that user-supplied arguments undergo proper escaping and validation before being passed to system commands, thereby preventing the exploitation of this command injection vulnerability.