CVE-2026-2606: IBM Webmethods API Gateway

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM webMethods API Gateway (on-prem) 10.11 through 10.11_Fix3210.15 to 10.15_Fix2711.1 to 11.1_Fix7 IBM webMethods API Management (on-prem) fails to properly validate user-supplied input passed to the url parameter on the /createapi endpoint. An attacker can modify this parameter to use a file:// URI schema instead of the expected https:// schema, enabling unauthorized arbitrary file read access on the underlying server file system.

Affected products

• IBM Webmethods API Gateway: version 10.11 only; version 10.15 only; version 11.1 only

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