CriticalCritical vulnerability

CVE-2026-18838 (CVSS 9.4)

NVD · officialPublished Nov 7, 2026Risk 50/100EPSS 0.7%

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.

Technical details

CVSS

9.4

AV:NetworkAC:LowPR:NoneUI:NoneC:HighI:HighA:Low

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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