| Component | OpenClaw |
| Severity | medium (CVSS 4.8) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
| Published (NVD) | 2026-03-05 |
| Last modified | 2026-06-17 |
| Affected versions | openclaw < 2026.2.13 |
| Fixed in | 2026.2.13 |
| Weakness | CWE-208 |
| CISA KEV | not listed |
NVD description
OpenClaw versions prior to 2026.2.13 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 recover the authentication token.
What to do
- Upgrade OpenClaw to
2026.2.13or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-28475
- https://github.com/openclaw/openclaw/security/advisories/GHSA-47q7-97xp-m272
- https://github.com/openclaw/openclaw/commit/113ebfd6a23c4beb8a575d48f7482593254506ec
- https://www.vulncheck.com/advisories/openclaw-timing-attack-via-hook-token-comparison
Read more
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