PatchSiren cyber security CVE debrief

CVE-2026-53829 OpenClaw CVE debrief

CVE-2026-53829 is a HIGH severity vulnerability in OpenClaw before 2026.5.18. The approval display truncation vulnerability allows authenticated users to hide command suffixes from approvers. Attackers can submit oversized exec commands with benign prefixes and malicious suffixes to execute unauthorized operations after approval.

Vendor: OpenClaw
Product: Unknown
CVSS: HIGH 8.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-12
Original CVE updated: 2026-06-16
Advisory published: 2026-06-12
Advisory updated: 2026-06-16

Who should care

Users of OpenClaw before version 2026.5.18 should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability has a CVSS score of 8.5 and is classified as HIGH severity. The CVSS vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

HIGH

Recommended defensive actions

Update OpenClaw to version 2026.5.18 or later.
Review and monitor exec commands for suspicious activity.

Evidence notes

The vulnerability was reported by Vulncheck and is tracked under CVE-2026-53829.

Sources and references

Verified primary and authoritative sources

CVE-2026-53829 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-53829

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-53829 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53829

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-xww8-gqvh-92x9

[email protected]
Source reference
Unverified legacy reference

URL: https://www.vulncheck.com/advisories/openclaw-command-truncation-in-exec-approval-display

[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.