CVE-2026-35623— OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Webhook Password Rate Limiting
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I. Basic Information for CVE-2026-35623
Vulnerability Information
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Vulnerability Title
OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Webhook Password Rate Limiting
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in webhook authentication that allows attackers to brute-force weak webhook passwords without throttling. Remote attackers can repeatedly submit incorrect password guesses to the webhook endpoint to compromise authentication and gain unauthorized access.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
过多认证尝试的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenClaw 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenClaw是OpenClaw开源的一个智能人工助理。 OpenClaw 2026.3.25之前版本存在安全漏洞，该漏洞源于Webhook身份验证缺少速率限制，攻击者可暴力破解弱Webhook密码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-35623
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · OpenClaw · 2026-04-09 · 25 CVEs total
| CVE-2026-35638 | 8.8 HIGH | OpenClaw < 2026.3.22 - Privilege Escalation via Self-Declared Scopes in Trusted-Proxy Cont |
| CVE-2026-35639 | 8.8 HIGH | OpenClaw < 2026.3.22 - Privilege Escalation via device.pair.approve Scope Validation |
| CVE-2026-35645 | 8.1 HIGH | OpenClaw < 2026.3.25 - Privilege Escalation via Synthetic operator.admin in deleteSession |
| CVE-2026-34512 | 8.1 HIGH | OpenClaw < 2026.3.25 - Improper Access Control in /sessions/:sessionKey/kill Endpoint |
| CVE-2026-35625 | 7.8 HIGH | OpenClaw < 2026.3.25 - Privilege Escalation via Silent Local Shared-Auth Reconnect |
| CVE-2026-35629 | 7.4 HIGH | OpenClaw < 2026.3.25 - Server-Side Request Forgery via Unguarded Configured Base URLs in C |
| CVE-2026-35637 | 7.3 HIGH | OpenClaw < 2026.3.22 - Premature Cite Expansion Before Authorization in Channel and DM |
| CVE-2026-35632 | 7.1 HIGH | OpenClaw <= 2026.2.22 - Symlink Traversal via IDENTITY.md appendFile in agents.create/upda |
| CVE-2026-35644 | 6.5 MEDIUM | OpenClaw < 2026.3.22 - Credential Exposure via baseUrl Fields in Gateway Snapshots |
| CVE-2026-35636 | 6.5 MEDIUM | OpenClaw 2026.3.11 < 2026.3.25 - Session Isolation Bypass via sessionId Resolution |
| CVE-2026-35631 | 6.5 MEDIUM | OpenClaw < 2026.3.22 - Missing Authorization Enforcement in Internal ACP Chat Commands |
| CVE-2026-35618 | 6.5 MEDIUM | OpenClaw < 2026.3.23 - Replay Identity Drift via Query-Only Variants in Plivo V2 Verificat |
| CVE-2026-35627 | 6.5 MEDIUM | OpenClaw < 2026.3.22 - Unauthenticated Cryptographic Work in Nostr Inbound DM Handling |
| CVE-2026-35622 | 5.9 MEDIUM | OpenClaw < 2026.3.22 - Improper Authentication Verification in Google Chat Webhook |
| CVE-2026-35640 | 5.3 MEDIUM | OpenClaw < 2026.3.25 - Denial of Service via Unauthenticated Webhook Request Parsing |
| CVE-2026-35633 | 5.3 MEDIUM | OpenClaw < 2026.3.22 - Unbounded Memory Allocation via Remote Media Error Responses |
| CVE-2026-35626 | 5.3 MEDIUM | OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook |
| CVE-2026-35634 | 5.1 MEDIUM | OpenClaw < 2026.3.23 - Authentication Bypass via Local-Direct Requests in Canvas Gateway |
| CVE-2026-35646 | 4.8 MEDIUM | OpenClaw < 2026.3.25 - Pre-Authentication Rate-Limit Bypass in Webhook Token Validation |
| CVE-2026-35628 | 4.8 MEDIUM | OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Telegram Webhook Rate Limiting |
Showing top 20 of 25 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: OpenClaw
- CVE-2026-44118
OpenClaw < 2026.4.22 - Owner Context Spoofing via Bearer Tok - CVE-2026-44116
OpenClaw < 2026.4.22 - Server-Side Request Forgery in Zalo P - CVE-2026-44117
OpenClaw < 2026.4.20 - Server-Side Request Forgery in QQBot - CVE-2026-44115
OpenClaw < 2026.4.22 - Shell Expansion Bypass in Unquoted He - CVE-2026-44114
OpenClaw < 2026.4.20 - Environment Variable Namespace Collis
Same vendor: OpenClaw
- CVE-2026-44118
OpenClaw < 2026.4.22 - Owner Context Spoofing via Bearer Tok - CVE-2026-44117
OpenClaw < 2026.4.20 - Server-Side Request Forgery in QQBot - CVE-2026-44116
OpenClaw < 2026.4.22 - Server-Side Request Forgery in Zalo P - CVE-2026-44115
OpenClaw < 2026.4.22 - Shell Expansion Bypass in Unquoted He - CVE-2026-44114
OpenClaw < 2026.4.20 - Environment Variable Namespace Collis
Same weakness: CWE-307
- CVE-2026-41893
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiti - CVE-2025-2514
Improper Restriction of Excessive Authentication Attempts vu - CVE-2023-54347
OpenEMR 7.0.1 Authentication Brute Force Mitigation Bypass - CVE-2026-7671
CodeWise Tornet Scooter Mobile App TwoFactor excessive authe - CVE-2026-26206
Wazuh: API brute-force protection bypass via race condition
V. Comments for CVE-2026-35623
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