Description

IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to access sensitive configuration data and perform unauthorized actions due to missing authentication for a critical function.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.3",
  "pubDate": "2026-11-07T05:18:42.310Z",
  "pubdate": "2026-11-07T05:18:42.310Z",
  "executiveSummary": "IBM API Connect versions 12.1.0.0 through 12.1.1.2 are susceptible to a critical authentication bypass vulnerability.\nThe vulnerability arises from missing authentication mechanisms for a critical function, which allows unauthenticated remote attackers to interact with sensitive endpoints.\nSuccessful exploitation permits unauthorized access to sensitive configuration data and the execution of unauthorized administrative or functional actions.\nThis flaw poses a severe risk to the confidentiality, integrity, and availability of the API management environment.\nThe vulnerability requires no prior authentication, meaning an attacker can perform actions directly through network-accessible interfaces.\nOrganizations using the affected versions are at risk of data exfiltration and potential compromise of the integrated API infrastructure.",
  "technicalDetails": "The vulnerability is classified as an improper authentication flaw originating from the failure to implement mandatory authorization checks on critical internal functions within the API Connect management plane.\nAffected versions include IBM API Connect 12.1.0.0, 12.1.1.0, 12.1.1.1, and 12.1.1.2.\nThe root cause of this exposure is the absence of verification logic within the affected function's access control layer, allowing requests to bypass the standard authentication middleware that typically gates management operations.\nThe attack flow proceeds as follows: 1) The attacker performs reconnaissance to identify the exposed critical function endpoint reachable over the network. 2) The attacker crafts a request to the identified endpoint, omitting valid authentication tokens or credentials. 3) Because the server-side code fails to validate the session state before executing the requested logic, the underlying function processes the request with elevated or unintended context. 4) The server returns sensitive configuration data or performs the requested unauthorized action based on the attacker's inputs.\nPost-exploitation, an attacker can extract sensitive configuration metadata, which may contain environment secrets, endpoint definitions, or infrastructure topology details. Furthermore, the ability to perform unauthorized actions allows for the manipulation of API gateways, potential disruption of traffic routing, or the deletion/modification of critical system configurations.\nThe attack is remotely exploitable without the need for pre-existing credentials, making it a high-severity entry point for further lateral movement or platform compromise within the organization's network architecture.\nThe lack of authentication on these critical functions means that any entity with network access to the API Connect management interface can trigger the vulnerability, bypassing the intended security boundaries of the product."
}