| 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) | 2026-04-09 |
| Last modified | 2026-06-17 |
| Affected versions | openclaw < 2026.3.25 |
| Fixed in | 2026.3.25 |
| Weakness | CWE-307 |
| CISA KEV | not listed |
NVD description
OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in webhook authentication that allows attackers to brute-force weak webhook passwords without throttling. Remote attackers can repeatedly submit incorrect password guesses to the webhook endpoint to compromise authentication and gain unauthorized access.
What to do
- Upgrade OpenClaw to
2026.3.25or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-35623
- https://github.com/openclaw/openclaw/security/advisories/GHSA-xq8g-hgh6-87hv
- https://github.com/openclaw/openclaw/commit/5e08ce36d522a1c96df2bfe88e39303ae2643d92
- https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-webhook-password-rate-limiting
Read more
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