CVE-2021-20440: IBM API Connect

Medium severity, CVSS 4.3. EPSS: 0.7% chance of exploitation in the next 30 days.

IBM API Connect 10.0.0.0, and 2018.4.1.0 through 2018.4.1.13 does not restrict member registration to the intended recepient. An attacker who is a valid user in the user registry used by API Manager can use a stolen invitation link and register themselves as a member of an API provider organization. IBM X-Force ID: 196536.

Affected products

• IBM API Connect: from 2018.4.1.0, up to and including 2018.4.1.13; version 10.0.0.0 only

Published 2021-03-15. Last modified 2026-06-17.