CVE-2026-19263 in mcp-bridge-api
Summary
by MITRE • 08/08/2026
A vulnerability was found in INQUIRELAB mcp-bridge-api up to b30a82aa1d1d1139e0de846c41c8aadee6e06114. The impacted element is an unknown function of the file mcp-bridge.js of the component Servers Endpoint. Performing a manipulation of the argument command/args results in command injection. It is possible to initiate the attack remotely. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The pull request to fix this issue awaits acceptance.
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Analysis
by VulDB Data Team • 08/11/2026
This vulnerability resides within the INQUIRELAB mcp-bridge-api component where an arbitrary code execution risk emerges from improper input validation in the servers endpoint functionality. The flaw manifests when user-supplied arguments containing command strings are processed without adequate sanitization or escaping mechanisms, creating a command injection vector that allows malicious actors to execute arbitrary system commands. The vulnerability affects the mcp-bridge.js file through an unknown function that handles command processing, making the exact code path difficult to pinpoint but clearly indicating a dangerous lack of input validation.
The technical implementation of this vulnerability demonstrates a classic command injection flaw where user-controllable data flows directly into shell execution contexts without proper filtering or parameterization. When attackers manipulate the command/args parameters passed to the affected function, they can inject malicious shell commands that get executed with the privileges of the application process. This remote exploitation capability means that adversaries can trigger the vulnerability from external networks without requiring local system access, significantly expanding the attack surface and potential impact.
From an operational standpoint, this vulnerability presents a critical security risk as it enables full system compromise through command injection attacks. Attackers could leverage this weakness to execute arbitrary code, escalate privileges, access sensitive data, establish persistent backdoors, or conduct lateral movement within affected networks. The rolling release deployment model of the product complicates remediation efforts since version information is unavailable and patching requires waiting for the fix PR to be accepted, creating an extended window of exposure during which systems remain vulnerable.
Security controls should focus on implementing strict input validation and parameterization techniques to prevent command injection attacks. The CWE-77 standard provides guidance for addressing command injection vulnerabilities through proper input sanitization and the use of safe API calls instead of direct shell command execution. Organizations should implement network-based protections such as web application firewalls and intrusion detection systems to monitor for suspicious command execution patterns. Additionally, following ATT&CK framework techniques for command and scripting interpreter execution can help detect and prevent exploitation attempts. The fix should involve proper input validation that rejects or escapes special characters used in shell command construction, implementing secure coding practices that avoid direct shell command invocation with user-controllable data.