critical
advisory
IBM API Connect: Security restriction bypass (CVE-2026-16920)
IBM API Connect versions 12.1.0.0 through 12.1.1.2 are vulnerable to a confused deputy flaw that allows a remote authenticated attacker to bypass security restrictions.
CVE search metadata
CVE search record: CVE-2026-16920. Severity: critical. CVSS: 9.9. KEV: no. Product: API Connect (12.1.0.0 through 12.1.1.2). Brief: IBM API Connect: Security restriction bypass (CVE-2026-16920). Brief link: https://feed.craftedsignal.io/briefs/2026-11-ibm-api-connect-bypass/
Triage facts
Revision 1- Applicability
- API Connect (12.1.0.0 through 12.1.1.2)
- Evidence
- Unknown
- Severity
- Critical
- Sources
- 1 public source
- Freshness
- Revision 1Nov 7, 05:49 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
IBM API Connect versions 12.1.0.0 through 12.1.1.2 contain a confused deputy vulnerability that allows a remote authenticated attacker to bypass security restrictions. This vulnerability has been assigned a CVSS v3.1 base score of 9.9.