Openclaw · Openclaw · CVE-2026-28475
**Name of the Vulnerable Software and Affected Versions**
OpenClaw versions prior to 2026.2.13
**Description**
The software uses non-constant-time string comparison for hook token validation, potentially 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 recover the authentication token. Real-world latency and jitter can make reliable measurement difficult. The issue requires the hooks to be exposed to an untrusted network and a large number of requests.
**Recommendations**
Upgrade to OpenClaw version 2026.2.13 or later.
If an immediate upgrade is not possible, restrict network access to the hooks endpoint and rotate the hooks token after updating.