CVE-2020-4640: IBM API Connect

Medium severity, CVSS 4.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Certain IBM API Connect 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 configurations can result in sensitive information in the URL fragment identifiers. This information can be cached in the intermediate nodes like proxy servers, cdn, logging platforms, etc. An attacker can make use of this information to perform attacks by impersonating a user. IBM X-Force ID: 185510.

Affected products

• IBM API Connect: from 2018.4.1.0, up to and including 2018.4.1.13; version 10.0.0.0 only; version 10.0.1.0 only

Published 2021-02-04. Last modified 2026-06-17.