CVE-2026-42434Network attack vector

Authenticated sandbox escape via exec host override

Published May 5, 2026 · Updated May 5, 2026

Sandbox escape in OpenClaw 2026.4.5 through 2026.4.9 allows remote authenticated users to execute commands on remote nodes. When tools.exec.host is auto and a sandbox runtime is active, resolveExecTarget accepts a per-call host=node override rather than retaining the sandbox target. A sandboxed agent with exec access can therefore bypass the execution boundary and run commands with the remote node's privileges.

CVSS severity8.7
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox escape in OpenClaw 2026.4.5 through 2026.4.9 allows remote authenticated users to execute commands on remote nodes. When tools.exec.host is auto and a sandbox runtime is active, resolveExecTarget accepts a per-call host=node override rather than retaining the sandbox target. A sandboxed agent with exec access can therefore bypass the execution boundary and run commands with the remote node's privileges.

The record

CVE
CVE-2026-42434
Published
May 5, 2026
Updated
May 5, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-863, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2026.4.5 <2026.4.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=2026.4.5 <2026.4.10

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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