This advisory has been withdrawn because it is a duplicate of GHSA-mf5g-6r6f-ghhm. This link is maintained to preserve external references.
OpenClaw before 2026.3.25 contains a pre-authentication rate-limit bypass vulnerability in webhook token validation that allows attackers to brute-force weak webhook secrets. The vulnerability exists because invalid webhook tokens are rejected without throttling repeated authentication attempts, enabling attackers to guess weak tokens through rapid successive requests.
{
"github_reviewed": true,
"github_reviewed_at": "2026-04-10T20:25:02Z",
"cwe_ids": [
"CWE-307"
],
"severity": "MODERATE",
"nvd_published_at": "2026-04-09T22:16:34Z"
}