CVE-2026-35623
OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Webhook Password Rate Limiting
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
15th
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.
| CWE | CWE-307 |
| Vendor | openclaw |
| Product | openclaw |
| Published | Apr 9, 2026 |
| Last Updated | Apr 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
OpenClaw / OpenClaw
0 < 2026.3.25
References
github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-xq8g-hgh6-87hv github.com: https://github.com/openclaw/openclaw/commit/5e08ce36d522a1c96df2bfe88e39303ae2643d92 vulncheck.com: https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-webhook-password-rate-limiting
Credits
🔍 Peng Zhou (@zpbrent)