CVE-2026-35640
CVE-2026-35640 · OpenClaw < 2026.3.25 - Denial of Service via Unauthenticated Webhook Request Parsing
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.9 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
Original sources
- https://github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456
- https://github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53
- https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsing
- https://nvd.nist.gov/vuln/detail/CVE-2026-35640