CVE-2026-18535
IBM API Connect Denial of Service
CVSS Score
9.6
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1333 |
| Vendor | ibm |
| Product | api connect |
| Published | Nov 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
High
Affected Versions
IBM / API Connect
12.1.0.0 ≤ 12.1.1.2 10.0.8.0 ≤ 10.0.8.12