CVE-2026-41336: OpenClaw < 2026.3.31 - Arbitrary Hook Code Execution via OPENCLAW_BUNDLED_HOOKS_DIR Environment Variable Override

Severity: high (CVSS 7.8 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: 2026-04-23 · updated 2026-06-17
Weakness: CWE-829

Description

OpenClaw before 2026.3.31 allows workspace .env files to override the OPENCLAW_BUNDLED_HOOKS_DIR environment variable, enabling loading of attacker-controlled hook code. Attackers can replace trusted default-on bundled hooks from untrusted workspaces to execute arbitrary code.

Affected products

OpenClaw: before 2026.3.31 — fixed in 2026.3.31

How to fix

Upgrade to a fixed version: OpenClaw 2026.3.31. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/330a9f98cb29c79b1c16a2117e03d6276a0d6289
https://github.com/openclaw/openclaw/security/advisories/GHSA-3qpv-xf3v-mm45
https://www.vulncheck.com/advisories/openclaw-arbitrary-hook-code-execution-via-openclaw-bundled-hooks-dir-environment-variable-override

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