This advisory has been withdrawn because it is a duplicate of GHSA-3h52-cx59-c456. This link is maintained to preserve external references.
OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.
{
"cwe_ids": [
"CWE-696"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-10T20:21:21Z",
"nvd_published_at": "2026-04-09T22:16:33Z",
"severity": "MODERATE"
}