CVE-2026-28464: Openclaw

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.

Affected products

• Openclaw Openclaw: before 2026.2.12 (fixed in 2026.2.12)

Published 2026-03-05. Last modified 2026-06-17.