CVE-2026-17147 in API Connect
Summary
by MITRE • 11/07/2026
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to execute arbitrary code and perform unauthorized administrative actions due to a path traversal vulnerability.
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Analysis
by VulDB Data Team • 11/07/2026
The identified security flaw within IBM API Connect versions ranging from 10.0.8.0 through 10.0.8.12, as well as the 12.1.0.0 through 12.1.1.2 release series, represents a critical path traversal vulnerability that compromises the integrity of administrative controls and system execution boundaries. This defect arises from insufficient validation or sanitization of user-supplied input when processing file paths within the application's backend logic. By manipulating directory separators or relative path indicators in HTTP requests directed at specific API endpoints, an attacker can construct malicious payloads designed to traverse outside the intended web root or restricted directories. The vulnerability specifically affects authenticated users, meaning that while a public internet-facing exploit is not possible without valid credentials, any compromised account with sufficient privileges can leverage this flaw to escalate their access level significantly beyond what was originally granted by the system's role-based access control mechanisms.
From a technical perspective, the core issue lies in how the application resolves file paths provided during administrative operations or configuration updates. When an authenticated user submits data that includes sequences such as dot-dot-slash characters, the underlying operating system interprets these as instructions to move up one directory level from the current working directory. If the software fails to properly canonicalize these paths before processing them, it may allow access to sensitive files located in parent directories or unrelated parts of the file system. This lack of strict input validation enables an attacker to read configuration files containing database credentials, private keys, or other secrets stored outside the application's sandboxed environment. Furthermore, if the vulnerable endpoint allows for write operations or command execution based on these paths, the impact escalates from information disclosure to full remote code execution with the privileges of the service account running IBM API Connect.
The operational impact of this vulnerability is severe due to its potential for privilege escalation and unauthorized administrative actions. An attacker who gains access through a compromised user account can exploit this path traversal flaw to overwrite critical system files, inject malicious scripts into executable directories, or modify configuration settings that dictate how the API gateway behaves. This capability effectively bypasses standard security controls designed to isolate different components of the platform. For organizations relying on IBM API Connect for managing enterprise APIs and microservices, such a breach could lead to data exfiltration, service disruption through denial-of-service conditions caused by corrupted system files, or complete takeover of the underlying infrastructure if the application runs with elevated privileges. The ability to perform unauthorized administrative actions means that an attacker can create new admin accounts, disable security logging, or alter network routing rules within the management plane, thereby establishing persistent access and hiding their presence from standard monitoring tools.
This vulnerability aligns closely with Common Weakness Enumeration identifier CWE-22, which defines Improper Limitation of a Pathname to a Restricted Directory. The exploitation technique is consistent with MITRE ATT&CK tactics related to Defense Evasion and Privilege Escalation, specifically techniques involving file system discovery or command injection via path manipulation. To mitigate this risk, organizations must immediately apply the latest available patches provided by IBM for their specific version of API Connect. It is crucial to verify that all instances running versions 10.0.8.x through 10.0.8.12 and 12.1.0.x through 12.1.1.2 are updated to the fixed release where input validation has been strengthened to reject or safely encode path traversal sequences. Additionally, administrators should enforce strict least-privilege principles for all user accounts interacting with the API management console, ensuring that no single account possesses excessive permissions unless absolutely necessary. Implementing web application firewalls with rules specifically targeting directory traversal patterns can provide an additional layer of defense in depth while patching efforts are completed. Regular audits of authentication logs and file system integrity checks should also be conducted to detect any signs of prior exploitation attempts or unauthorized changes resulting from this vulnerability.