{"id":"CVE-2026-18535","title":"IBM API Connect Denial of Service","summary":"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.","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H","cvssSource":"cna","cwe":["CWE-1333"],"vendor":"IBM","product":"API Connect","affected":["api_connect >= 12.1.0.0 <= 12.1.1.2","api_connect >= 10.0.8.0 <= 10.0.8.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-08T01:45:54.241823Z"},"published":"2026-11-07","updated":"2026-11-08","sourceUpdated":"2026-11-08T01:46:03.050Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-18535","references":[{"url":"https://www.ibm.com/support/pages/node/7291753"},{"url":"https://www.ibm.com/support/pages/node/7292434"}],"tags":["cve.org"],"epss":0.00287,"epssPercentile":0.21332,"ingestedAt":"2026-11-07T05:10:28.782Z","slug":"CVE-2026-18535","body":"## Overview\n\nIBM 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.\n\n## Affected\n\n- `api_connect >= 12.1.0.0 <= 12.1.1.2`\n- `api_connect >= 10.0.8.0 <= 10.0.8.12`\n\n## Remediation\n\nIBM strongly recommends addressing the vulnerability now by upgrading to v12.1.1.3\nFix Central Link:  https://www.ibm.com/support/pages/node/7290205 \n\n\n\nIBM strongly recommends addressing the vulnerability now by upgrading to 10.0.8.13\n\n\n\nFix Central Link: https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7EWebSphere&product=ibm/WebSphere/IBM+API+Connect&release=10.0.8.12&platform=All&function=all","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}