---
id: CVE-2026-34505
title: >-
  OpenClaw before 2026.3.12 applies rate limiting only after successful webhook
  authentication, allowing attackers to bypass rate limits and brute-force
  webhook secrets
summary: >-
  OpenClaw before 2026.3.12 applies rate limiting only after successful webhook
  authentication, allowing attackers to bypass rate limits and brute-force
  webhook secrets. Attackers can submit repeated authentication requests with
  invalid se…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-307
vendor: openclaw
product: openclaw
affected:
  - openclaw < 2026.3.12
patched:
  - openclaw 2026.3.12
published: '2026-03-31'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-34505'
references:
  - url: >-
      https://github.com/openclaw/openclaw/security/advisories/GHSA-5m9r-p9g7-679c
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-webhook-rate-limiting-bypass-via-pre-authentication-secret-validation
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00357
epssPercentile: 0.26774
ingestedAt: '2026-07-24T22:40:25.282Z'
---

## Overview

OpenClaw before 2026.3.12 applies rate limiting only after successful webhook authentication, allowing attackers to bypass rate limits and brute-force webhook secrets. Attackers can submit repeated authentication requests with invalid secrets without triggering rate limit responses, enabling systematic secret guessing and subsequent forged webhook submission.

## Affected

- `openclaw < 2026.3.12`

## Remediation

Upgrade past the affected range:

- `openclaw 2026.3.12`