CVE-2026-92958

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{"bugzilla": {"description": "vm2: vm2: Sandbox escape via denylist bypass in NodeVM", "id": "2536039", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536039"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L", "status": "draft"}, "cwe": "CWE-1220", "details": ["A flaw was found in vm2, a sandbox for Node.js. When the NodeVM embedder uses a builtin wildcard with negative entries to deny specific modules, such as 'fs' for file system access, the denylist mechanism fails to block subpaths like 'fs/promises'. This allows sandboxed code to bypass the intended restrictions and access the promise-based file system API. An attacker can exploit this to perform arbitrary file system operations, including creating and writing files, which may lead to a sandbox escape and arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-92958", "package_state": [{"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Affected", "package_name": "rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Affected", "package_name": "rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Affected", "package_name": "rhdh/rhdh-hub-rhel9", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Affected", "package_name": "ansible-automation-platform/automation-portal", "product_name": "Self-service automation portal 2"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Affected", "package_name": "ansible-automation-platform/bootc-automation-portal-rhel9", "product_name": "Self-service automation portal 2"}], "public_date": "2026-09-17T13:46:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-92958\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-92958\nhttps://github.com/patriksimek/vm2/security/advisories/GHSA-6rh5-qq4q-97xh\nhttps://www.vulncheck.com/advisories/vm2-before-3.11.7-denylist-bypass-via-fs-promises"], "statement": "Important: Red Hat products utilizing vm2, such as Red Hat Ansible Automation Platform and Red Hat Developer Hub, are affected by a sandbox escape vulnerability. This flaw allows sandboxed code to bypass denylist restrictions and access the host filesystem, enabling unauthorized file creation, writing, and other operations from within the isolated environment.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,3.11.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "3.11.7"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "vm2", "source": "cna", "vendor": "patriksimek"}, "product": "vm2", "vendor": "patriksimek"}], "created": "2026-09-17T23:00:12.764695+00:00", "updated": "2026-09-18T00:30:16.964919+00:00", "vendors": ["patriksimek", "patriksimek$PRODUCT$vm2"]}