Description

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 bypass security restrictions due to improper authentication.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.1",
  "pubDate": "2026-11-07T05:18:42.697Z",
  "pubdate": "2026-11-07T05:18:42.697Z",
  "executiveSummary": "A critical security vulnerability has been identified in IBM API Connect affecting versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2. The flaw is classified as an improper authentication issue, which may allow a remote authenticated attacker to circumvent existing security restrictions.\nThe vulnerability poses significant risk to the integrity and confidentiality of the API management environment. By bypassing authentication controls, an attacker could potentially gain unauthorized access to restricted API resources or perform administrative actions beyond their assigned privilege level.\nExploitation requires the attacker to have an existing authenticated session or account within the target system, leveraging the flaw to elevate privileges or access prohibited endpoints. This vulnerability increases the attack surface of the API gateway and management plane, potentially leading to unauthorized data exposure or unauthorized modification of API configurations.\nOrganizations utilizing the specified versions of IBM API Connect are advised to assess their exposure and implement security patches or recommended workarounds as they become available from IBM to prevent unauthorized exploitation of the management interface.",
  "technicalDetails": "The vulnerability resides in the authentication and authorization handling logic of IBM API Connect. Specifically, the affected versions (10.0.8.0–10.0.8.12 and 12.1.0.0–12.1.1.2) exhibit a flaw in how session states or request tokens are validated when interacting with protected resources.\nThe root cause of this vulnerability is improper validation of authentication credentials or session tokens within the API Connect core components. When an attacker attempts to interact with restricted interfaces or management endpoints, the application's authentication middleware fails to adequately enforce security policies, allowing requests that should have been rejected based on the authenticated user's current session or privilege level.\nThe attack flow commences with the attacker establishing a legitimate, authenticated connection to the IBM API Connect platform. Once authenticated, the attacker crafts specific requests targeting restricted resources or management APIs. Due to the failure in the underlying security enforcement mechanism, the system fails to perform the necessary verification check to ensure the user possesses the requisite permissions for the requested action or resource.\nThis bypass allows the attacker to manipulate or access data that should be protected by access control lists (ACLs) or role-based access control (RBAC) configurations. Because the system assumes the request is valid based on the initial successful (but low-privilege) authentication, the attacker can traverse functional boundaries that are otherwise isolated.\nThe technical impact is significant as it essentially neutralizes the granular access controls intended to protect the API management plane. If the attacker can reach sensitive administrative endpoints, they may be able to modify API definitions, view sensitive configuration metadata, or alter key management settings, depending on the scope of the bypassed security restriction.\nBecause the vulnerability is triggered after initial authentication, the system's logging mechanisms may attribute these malicious requests to a valid user session, which complicates incident response and audit processes. The absence of proper authorization verification at each discrete request cycle constitutes a failure in the application's security posture, requiring a patch to the authentication enforcement logic within the platform's core API gateway or management stack components."
}