CVE-2020-4640

Severity: medium (CVSS 4.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-02-04 · updated 2026-06-17
Weakness: CWE-200

Description

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 through 2018.4.1.13; 10.0.0.0, 10.0.1.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/185510
https://www.ibm.com/support/pages/node/6410486
https://exchange.xforce.ibmcloud.com/vulnerabilities/185510
https://www.ibm.com/support/pages/node/6410486

Get alerted when CVE-2020-4640 or the next vulnerability affects your stack