CVE-2026-41338

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2026.3.31)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "2026.3.31"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "OpenClaw", "source": "cna", "vendor": "OpenClaw"}, "product": "openclaw", "vendor": "openclaw"}], "analysis": {"en": {"generated_at": "2026-04-28T07:20:24.507610+00:00", "value": {"mitigation_remediation": ["Upgrade OpenClaw to version 2026.3.31 or later to remove the TOCTOU flaw.", "If an upgrade is not immediately possible, restrict the use of apply_patch, remove, and mkdir operations from untrusted code paths within the sandbox until the patch is applied.", "Implement additional validation or atomic file operation checks after creation to ensure the file path has not been altered between validation and act, mitigating the TOCTOU condition."], "summary": {"action": "Apply Patch", "impact": "Unauthorized File Manipulation"}, "threat_synthesis": {"affected_systems": "All OpenClaw installations running any release older than 2026.3.31, across all supported platforms where the Node.js runtime is present. The affected product is OpenClaw:OpenClaw, and the vulnerability is present in the sandbox file handling modules used by the application.", "description_and_impact": "OpenClaw prior to version 2026.3.31 suffers from a Time\u2011of\u2011Check Time\u2011of\u2011Use condition within sandbox file operations, allowing an attacker to bypass file descriptor\u2011based safeguards. By exploiting the check\u2011then\u2011act patterns in apply_patch, remove, and mkdir calls, malicious actors can alter or create files between validation and execution, potentially compromising data integrity or enabling privileged code execution within the sandbox. This weakness is classified as CWE\u2011367.", "risk_and_exploitability": "The CVSS score of 4.3 indicates moderate severity, while the EPSS score of <1% points to a low exploitation probability in the near term. Since the vulnerability is not listed in the CISA KEV catalog, there are no confirmed widespread attacks yet. The likely attack vector is local or remote if the sandbox exposes untrusted user input that triggers apply_patch, remove, or mkdir operations \u2013 this inference is drawn from the described check\u2011then\u2011act pattern. Overall, the risk is moderate, but the potential for privilege escalation within the sandbox warrants timely remediation."}}}}, "created": "2026-04-28T04:15:15.760727+00:00", "updated": "2026-04-28T07:30:26.318275+00:00", "vendors": ["openclaw", "openclaw$PRODUCT$openclaw"]}