CVE-2026-35626— OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook
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I. Basic Information for CVE-2026-35626
Vulnerability Information
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Vulnerability Title
OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenClaw before 2026.3.22 contains an unauthenticated resource exhaustion vulnerability in voice call webhook handling that buffers request bodies before provider signature checks. Attackers can send large or malicious webhook requests to exhaust server resources without authentication by bypassing signature validation.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不对称的资源消耗(放大攻击)
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 2026.3.22之前版本存在安全漏洞，该漏洞源于语音呼叫Webhook处理存在未经身份验证的资源耗尽问题，可能导致拒绝服务攻击。
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-2026-35626
| # | 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-2026-35634 | 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-2026-35623 | 4.8 MEDIUM | OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Webhook Password Rate Limiting |
| 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-2026-44117
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 vendor: 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 weakness: CWE-405
- CVE-2026-35665
OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook - CVE-2026-25611
Pre-Authentication Memory Exhaustion Denial of Service in Mo - CVE-2026-24324
Denial of service (DOS) vulnerability in SAP BusinessObjects - CVE-2026-0485
Denial of service (DOS) vulnerability in SAP BusinessObjects - CVE-2026-22775
devalue vulnerable to denial of service due to memory/CPU ex
V. Comments for CVE-2026-35626
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