Vulnerability · Published Nov 7, 2026 · Assigned by ibm
CVE-2026-18838Multiple Vulnerabilities in IBM API Connect
Critical 9.4
In plain English
A critical-severity authentication bypass by spoofing in API Connect from IBM. There are no confirmed reports of exploitation so far.
Severity (CVSS 3.1)9.4Critical
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 a remote attacker to obtain sensitive information and modify API configurations due to improper authentication. Identity information supplied in requests is not sufficiently verified, which could allow a caller to impersonate another user.
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:N/UI:N/S:U/C:H/I:H/A:L
References
- https://www.ibm.com/support/pages/node/7295635 vendor-advisory, patch