CVE-2026-53829: OpenClaw < 2026.5.18 - Command Truncation in Exec Approval Display

Severity: high (CVSS 8.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-12 · updated 2026-07-23
Weakness: CWE-451

Description

OpenClaw before 2026.5.18 contains an approval display truncation vulnerability allowing 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.

Affected products

OpenClaw: before 2026.5.18 — fixed in 2026.5.18

How to fix

Upgrade to a fixed version: OpenClaw 2026.5.18. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/security/advisories/GHSA-xww8-gqvh-92x9
https://www.vulncheck.com/advisories/openclaw-command-truncation-in-exec-approval-display

Get alerted when CVE-2026-53829 or the next vulnerability affects your stack