CriticalCritical vulnerability

CVE-2026-18535 (CVSS 9.6)

NVD · officialPublished Nov 7, 2026Risk 50/100EPSS 0.3%

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 are vulnerable to a Regular Expression Denial of Service (ReDoS) attack and to improper neutralisation of wildcard query operators.

Technical details

CVSS

9.6

AV:NetworkAC:LowPR:LowUI:NoneC:HighI:NoneA:High

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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