CVE-2026-35646
Medium · 4.8CVSS
4.8
EPSS
0.4%
Published
Apr 9, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | openclaw | 0 | 2026.3.28 |
Related vulnerabilities
- GHSA-mf5g-6r6f-ghhm OpenClaw: Synology Chat Webhook Pre-Auth Rate-Limit Bypass Enables Brute-Force Guessing… Same vulnerability
- GHSA-4hpg-mp64-x7xq OpenClaw: Internal/webchat command auth could inherit ownerAllowFrom wildcard state Also affects openclaw
- GHSA-8mg9-j9cf-54cj OpenClaw: Empty-scope device re-pairing could confuse caller scope containment Also affects openclaw
- GHSA-rx78-29qr-5hq8 OpenClaw: Workspace-derived service PATH could influence trash command selection Also affects openclaw
- GHSA-wc84-j36w-pw4x OpenClaw: Workspace .env STATE_DIRECTORY could influence bundled runtime dependency roots Also affects openclaw
- GHSA-cw4q-gqg5-g38h OpenClaw: Discord allowFrom could bind to mutable display names Also affects openclaw
- GHSA-mpc8-jxjh-qpgh OpenClaw: Focus command could miss controlScope enforcement Also affects openclaw
- GHSA-24vr-rprv-67rf OpenClaw: Workspace .env npm_execpath could influence bundled runtime dependency install Also affects openclaw