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.
Security readout for executives and security teams
Plain-English summary
CVE-2026-31992 lets a logged-in OpenClaw operator bypass command allowlist guardrails and run unintended commands when /usr/bin/env is permitted. This is not an unauthenticated internet takeover, but it can turn limited operator access into damaging command execution. OpenClaw versions before 2026.2.23 are identified as affected.
Executive priority
Treat as a high-priority remediation for OpenClaw environments with operator command execution enabled. Prioritize patching before routine maintenance if OpenClaw is used for automation, deployment, or administrative workflows where unintended commands could affect production systems.
Technical view
OpenClaw system.run policy analysis can be bypassed through /usr/bin/env behavior involving env -S. If /usr/bin/env is allowlisted, runtime execution may differ from the guardrail’s analysis, allowing unintended shell wrapper execution. CVSS v4.0 is 7.1 high, with network attack vector, low complexity, and low privileges required.
Likely exposure
Exposure is most likely in OpenClaw deployments before 2026.2.23 where authenticated operators can use system.run and /usr/bin/env is allowlisted. Systems without operator access paths or without this allowlist condition appear less exposed based on the provided sources.
Exploitation context
Sources describe authenticated exploitation requiring low privileges and no user interaction. The CVE is not listed as CISA KEV in the provided bundle, and no cited source here establishes active exploitation in the wild.
Researcher notes
The source bundle states OpenClaw versions before 2026.2.23 are affected, but the structured affected entry lists version “0” with defaultStatus “unaffected,” which is inconsistent. Rely on the vendor advisory and patch references for final scoping. No public active exploitation evidence is provided here.
Mitigation direction
Upgrade OpenClaw to version 2026.2.23 or later.
Review the GitHub advisory and patch commits for vendor-confirmed remediation details.
Review system.run allowlists, especially any allowance for /usr/bin/env.
If vendor guidance permits, remove /usr/bin/env from allowlists until patched.
Audit operator accounts and restrict system.run access to necessary users only.
Validation and detection
Inventory OpenClaw instances and record their installed versions.
Identify whether system.run is enabled for authenticated operators.
Check allowlist configuration for /usr/bin/env.
Confirm the 2026.2.23 fix or referenced patch commits are present.
Review logs for unusual system.run activity by operator accounts.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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cwe · low confidence lookup
CWE-184: Exact CWE lookup
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CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-184 · source CWE mapping
Incomplete List of Disallowed Inputs
Incomplete List of Disallowed Inputs represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.