CVE-2026-31997: OpenClaw < 2026.3.1 - Executable Rebind via Unbound PATH-token in system.run Approvals

Severity: medium (CVSS 6.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-19 · updated 2026-06-17
Weakness: CWE-367

Description

OpenClaw versions prior to 2026.3.1 fail to pin executable identity for non-path-like argv[0] tokens in system.run approvals, allowing post-approval executable rebind attacks. Attackers can modify PATH resolution after approval to execute a different binary than the operator approved, enabling arbitrary command execution.

Affected products

OpenClaw: before 2026.3.1 — fixed in 2026.3.1

How to fix

Upgrade to a fixed version: OpenClaw 2026.3.1. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/security/advisories/GHSA-q399-23r3-hfx4
https://www.vulncheck.com/advisories/openclaw-executable-rebind-via-unbound-path-token-in-system-run-approvals

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