{"id":"CVE-2026-94407","aliases":[],"cve":{"records":[{"id":"CVE-2026-94407","source":"ibm","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-21T14:03:52.354Z","published":"2026-11-13T21:43:35.363Z","modified":"2026-11-13T21:43:35.363Z"}],"publishers":[{"name":"ibm","role":"CNA","organizationId":"9a959283-ebb5-44b6-b705-dcc2bbced522","modified":"2026-11-13T21:43:35.363Z"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7296667","tags":["vendor-advisory","patch"],"source":"ibm"}],"weaknesses":[{"id":"CWE-1333","description":"CWE-1333 Inefficient Regular Expression Complexity","source":"ibm"}],"applicability":[],"prioritization":[]},"title":"IBM ContextForge MCP Gateway is affected by a regular expression denial of service","titleSource":"ibm","descriptionSource":"ibm","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.","score":6.5,"severity":"medium","published":"2026-11-13T21:43:35.363Z","modified":"2026-11-13T21:43:35.363Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"IBM","name":"ContextForge MCP Gateway","platforms":[],"versions":[{"version":"1.0.0","status":"affected","lessThanOrEqual":"1.0.11","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:contextforge_mcp_gateway:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:contextforge_mcp_gateway:1.0.11:*:*:*:*:*:*:*"],"source":"ibm","url":"https://www.cve.org/CVERecord?id=CVE-2026-94407"}],"remediation":[{"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 ]","source":"ibm","url":"https://www.cve.org/CVERecord?id=CVE-2026-94407"},{"text":"None. IBM strongly recommends upgrading to the fixed version.","source":"ibm","url":"https://www.cve.org/CVERecord?id=CVE-2026-94407"}],"references":["https://www.ibm.com/support/pages/node/7296667"],"sources":[{"name":"CVE","id":"CVE-2026-94407","modified":"2026-11-13T21:43:35.363Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-94407"}],"assessments":[{"source":"ibm","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5}],"sourceAffected":[],"observedAt":"2026-11-13T22:14:53.732Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T23:00:32.916Z"},"coverage":[{"source":"NVD","status":"refresh-failed","attemptedAt":"2026-11-13T22:35:31.178Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-13T22:35:31.761Z","attemptedAt":"2026-11-13T22:35:31.761Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-11-13T22:35:31.761Z","attemptedAt":"2026-11-13T22:35:31.761Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-13T22:35:32.470Z","attemptedAt":"2026-11-13T22:35:32.470Z"}],"evidence":[],"aiSummary":{"text":"IBM ContextForge MCP Gateway versions 1.0.0 through 1.0.11 are potentially vulnerable to denial of service due to uncontrolled regular expression complexity. An authenticated user with tool-registration privileges can embed malicious regex patterns, potentially degrading gateway availability.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-13T22:16:18.339Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-94407"}]}}