CVE-2018-1778: IBM API Connect

High severity, CVSS 8.1. EPSS: 3.4% chance of exploitation in the next 30 days.

IBM LoopBack (IBM API Connect 2018.1, 2018.4.1, 5.0.8.0, and 5.0.8.4) could allow an attacker to bypass authentication if the AccessToken Model is exposed over a REST API, it is then possible for anyone to create an AccessToken for any User provided they know the userId and can hence get access to the other user’s data / access to their privileges (if the user happens to be an Admin for example). IBM X-Force ID: 148801.

Affected products

• IBM API Connect: from 5.0.8.0, up to and including 5.0.8.4; from 2018.1.0, up to and including 2018.4.1.0

Published 2018-12-20. Last modified 2026-06-17.