{"affected":[{"product":"ContextForge MCP Gateway","source":"CNA: ibm","vendor":"IBM","versions":[{"lessThanOrEqual":"1.0.11","status":"affected","version":"1.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-94407","cwes":["CWE-1333"],"description":"IBM ContextForge MCP Gateway 1.0.0 through 1.0.11 is potentially vulnerable to denial of service due to uncontrolled regular expression complexity (CWE-400 / ReDoS). An authenticated user with tool-registration privileges can embed catastrophically backtracking regex patterns in a tool's JSON Schema `pattern` field; when ContextForge validates arguments against that schema, the validation call may consume unbounded CPU, potentially degrading gateway availability.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.5,"severity":"medium","source":"CNA: ibm","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":6.5,"severity":"medium","source":"NVD: psirt@us.ibm.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794608247167,"publishedAt":1794606215363,"references":[{"source":"CNA: ibm","tags":["vendor-advisory","patch"],"url":"https://www.ibm.com/support/pages/node/7296667"},{"source":"psirt@us.ibm.com","tags":[],"url":"https://www.ibm.com/support/pages/node/7296667"}],"remediation":[{"kind":"fix","source":"CNA: ibm","text":"IBM strongly recommends addressing the vulnerability now.\n\nProduct(s)Version(s) number and/or range Remediation/Fix/InstructionsIBM ContextForge MCP Gateway\n\n\n\nv1.0.0 - v1.0.11Upgrade to v1.1.0. See [ v1.1.0 release notes https://github.com/IBM/mcp-context-forge/releases/tag/v1.1.0 ]"},{"kind":"workaround","source":"CNA: ibm","text":"None. IBM strongly recommends upgrading to the fixed version."},{"kind":"fix","source":"CNA: ibm","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://www.ibm.com/support/pages/node/7296667"}],"revision":"71dae8403a016d3a1fbe28ef5e68e25f056fd1d6bd08effce432a4a77df82756","sources":[{"modifiedAt":1794606215363,"name":"CNA: ibm","retrievedAt":1794607809979,"url":"https://www.cve.org/CVERecord?id=CVE-2026-94407"},{"modifiedAt":1794608247167,"name":"NVD","retrievedAt":1794615618144,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-94407"}],"ssvc":null,"status":"published","title":"IBM ContextForge MCP Gateway is affected by a regular expression denial of service","updatedAt":1794615618144}