CVE-2026-76760 in cc-connect
Summary
by MITRE • 08/20/2026
A vulnerability was found in chenhg5 cc-connect up to 1.4.1. Affected by this vulnerability is the function Authenticate of the file core/webhook.go. The manipulation of the argument exec results in code injection. The attack may be performed from remote. The exploit has been made public and could be used. The reported GitHub issue was closed automatically due to inactivity.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 08/20/2026
The vulnerability identified within chenhg5 cc-connect versions up to 1.4.1 represents a critical security flaw located specifically in the Authenticate function of the core/webhook.go file. This component is responsible for handling authentication requests, which are fundamental to securing access control mechanisms within the application architecture. The root cause of this issue lies in improper input validation and sanitization practices applied to the exec argument passed during the execution flow. When an attacker supplies a specially crafted payload as part of the exec parameter, the system fails to adequately filter or escape special characters that have significance in command interpretation contexts. This failure allows for arbitrary code injection, where malicious commands are executed with the privileges of the application process rather than being treated strictly as data inputs.
From a technical perspective, this flaw aligns closely with CWE-78 Improper Neutralization of Special Elements used in an OS Command Operation, commonly known as OS command injection. The vulnerability arises because the developer likely utilized string concatenation or insufficient escaping mechanisms when constructing system commands based on user-supplied input. By manipulating the exec argument, a remote attacker can inject shell metacharacters such as semicolons, pipes, or backticks to break out of the intended context and append additional malicious instructions. This type of exploitation does not require local access; it is fully exploitable from a remote location provided that the affected webhook endpoint is accessible over the network. The availability of public exploits significantly lowers the barrier for entry, allowing even attackers with limited technical expertise to leverage this flaw against vulnerable instances.
The operational impact of successfully exploiting this vulnerability is severe and potentially catastrophic. Since authentication modules often run with elevated privileges or have access to sensitive internal resources, successful code injection can lead to complete system compromise. An attacker could execute arbitrary commands on the host operating system, leading to unauthorized data exfiltration, modification of critical configuration files, installation of persistent backdoors, or use of the compromised server as a pivot point for further attacks within the network infrastructure. In cloud environments, this might also result in lateral movement across containerized workloads if identity and access management controls are not strictly enforced. The fact that the associated GitHub issue was closed automatically due to inactivity highlights a critical gap in maintenance and security response protocols, leaving users of affected versions exposed without official patches or guidance for remediation.
To mitigate this risk, immediate action is required by administrators running chenhg5 cc-connect version 1.4.1 or earlier. The most effective mitigation involves upgrading to a patched version where the input validation logic has been corrected to properly sanitize and validate all inputs before they are processed in command execution contexts. If an upgrade is not immediately feasible, temporary mitigations should include implementing strict allow-listing for acceptable values of the exec argument at the network perimeter using web application firewalls or reverse proxy configurations. Additionally, enabling detailed logging on the webhook endpoints can aid in detecting attempted exploitation activities by monitoring for anomalous patterns in request payloads. Organizations must also review their dependency management strategies to ensure that open-source components are regularly audited against known vulnerability databases and that security issues reported in public repositories receive timely attention from maintainers or community contributors.