API CONNECT V12 ONPREM · CVE-2026-17362 · Infrastructure
FIX → 12.1.1.3 ✓ verified
IBM API Connect V12 OnPrem v12.1.0.0 through v12.1.1.2 is missing an authorization check (CWE-862, CVSS 9.8, no authentication required), so a remote attacker can create, modify or delete tenants. IBM fixed it in v12.1.1.3 in a bulletin covering many other API Connect CVEs. IBM lists no workaround.
first public Nov 7, 2026 · 2 sources
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Teams running self-hosted IBM API Connect V12 OnPrem at 12.1.0.0 through 12.1.1.2 are exposed; the flaw is reachable remotely without credentials, and tenant changes affect every API and user in the tenant. Versions at 12.1.1.3 or later can skip it.
Not affected if unknown
Who cares api-gateway, ibm-api-connect, self-hosted
v12.1.0.0 through v12.1.1.2 are affected; v12.1.1.3 contains the fixIBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to create, modify, or delete tenants due to missing authorization.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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Upgrade to 12.1.1.3
v12.1.1.3 (Fix Central: https://www.ibm.com/support/pages/node/7290205)