Vulnerability · Published Nov 7, 2026 · Assigned by ibm
CVE-2026-19121Multiple Vulnerabilities in IBM API Connect
High 8.3
In plain English
A high-severity authentication bypass by spoofing in API Connect from IBM. There are no confirmed reports of exploitation so far.
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)–no EPSS score yet
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
IBM API Connect 12.1.0.0 through 12.1.1.2 could allow an authenticated attacker to gain unauthorized access due to improper authorization. Tenant context is not sufficiently verified against the authenticated user, which could allow access to another tenant's resources.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | API Connect | 12.1.0.0 – through 12.1.1.2 |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
References
- https://www.ibm.com/support/pages/node/7295635 vendor-advisory, patch