PatchSiren cyber security CVE debrief

CVE-2026-53853 OpenClaw CVE debrief

CVE-2026-53853 is a HIGH-severity vulnerability in OpenClaw, a software that was vulnerable to an argument pattern validation bypass in its exec allowlist. The vulnerability, which was published on 2026-06-16T19:17:02.650Z and modified on 2026-06-16T20:42:46.200Z, allows attackers to execute disallowed arguments for allowlisted executables on Linux and macOS systems. This could potentially enable unauthorized file access, network access, or command execution. The CVSS score for this vulnerability is 7.6.

Vendor: OpenClaw
Product: Unknown
CVSS: HIGH 7.6
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-16
Original CVE updated: 2026-06-18
Advisory published: 2026-06-16
Advisory updated: 2026-06-18

Who should care

Users of OpenClaw before version 2026.5.12 on Linux and macOS systems should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability is caused by an argument pattern validation bypass in the exec allowlist of OpenClaw. This allows attackers to bypass configured argPattern restrictions by directly invoking allowlisted executables with unrestricted arguments.

Defensive priority

HIGH

Recommended defensive actions

Update OpenClaw to version 2026.5.12 or later.
Restrict access to allowlisted executables to prevent unauthorized invocation.
Monitor system logs for suspicious activity related to OpenClaw executables.

Evidence notes

The CVE record for CVE-2026-53853 was obtained from the official CVE.org website [cve-org]. Additional information was obtained from the NVD detail page [nvd] and source references [ref-4], [ref-5].

Sources and references

Verified primary and authoritative sources

CVE-2026-53853 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-53853

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-53853 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53853

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source reference
Unverified legacy reference

URL: https://github.com/openclaw/openclaw/security/advisories/GHSA-v2ww-5rh7-2h5v

[email protected]
Source reference
Unverified legacy reference

URL: https://www.vulncheck.com/advisories/openclaw-argument-pattern-bypass-in-exec-allowlist-via-linux-and-macos

[email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.