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CVE-2026-41343— OpenClaw < 2026.3.31 - Denial of Service via LINE Webhook Handler Pre-Auth Concurrency

Quick assessment

Affected
OpenClaw OpenClaw
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenClaw是OpenClaw开源的一个智能人工助理。 OpenClaw 2026.3.31之前版本存在安全漏洞，该漏洞源于公共LINE webhook路径上缺少共享的预身份验证并发预算，允许攻击者造成瞬时可用性损失，远程攻击者可通过在签名验证前向webhook端点发送大量并发请求来耗尽资源并降低服务可用性。

CVSS 5.3 · Medium EPSS 0.81% · P55

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-41343

Vulnerability Information
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Vulnerability Title
OpenClaw < 2026.3.31 - Denial of Service via LINE Webhook Handler Pre-Auth Concurrency
Source: CVE Program / CVE List V5
Vulnerability Description
OpenClaw before 2026.3.31 lacks a shared pre-auth concurrency budget on the public LINE webhook path, allowing attackers to cause transient availability loss. Remote attackers can flood the webhook endpoint with concurrent requests before signature verification to exhaust resources and degrade service availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
交互频率的控制不恰当
Source: CVE Program / CVE List V5
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 2026.3.31之前版本存在安全漏洞，该漏洞源于公共LINE webhook路径上缺少共享的预身份验证并发预算，允许攻击者造成瞬时可用性损失，远程攻击者可通过在签名验证前向webhook端点发送大量并发请求来耗尽资源并降低服务可用性。
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

Vendor Product Affected Versions CPE Subscribe
OpenClaw OpenClaw 0 ~ 2026.3.31 -

II. Public POCs for CVE-2026-41343

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III. Intelligence Information for CVE-2026-41343

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Patches & Fixes for CVE-2026-41343 (1)

Same Patch Batch · OpenClaw · 2026-04-23 · 32 CVEs total

CVE-2026-41352 8.8 HIGH OpenClaw < 2026.3.31 - Remote Code Execution via Node Scope Gate Bypass
CVE-2026-41349 8.8 HIGH OpenClaw < 2026.3.28 - Agentic Consent Bypass via config.patch
CVE-2026-41353 8.1 HIGH OpenClaw < 2026.3.22 - allowProfiles Bypass via Profile Mutation and Runtime Selection
CVE-2026-41336 7.8 HIGH OpenClaw < 2026.3.31 - Arbitrary Hook Code Execution via OPENCLAW_BUNDLED_HOOKS_DIR Enviro
CVE-2026-41342 7.3 HIGH OpenClaw < 2026.3.28 - Unauthenticated Discovery Endpoint Credential Exfiltration via Remo
CVE-2026-41355 7.3 HIGH OpenClaw < 2026.3.28 - Arbitrary Code Execution via Mirror Mode Sandbox File Conversion
CVE-2026-41359 7.1 HIGH OpenClaw < 2026.3.28 - Privilege Escalation via operator.write to Admin-Class Telegram Con
CVE-2026-41361 7.1 HIGH OpenClaw < 2026.3.28 - SSRF Guard Bypass via IPv6 Special-Use Ranges
CVE-2026-41347 7.1 HIGH OpenClaw < 2026.3.31 - Cross-Site Request Forgery via Missing Browser-Origin Validation in
CVE-2026-41360 6.7 MEDIUM OpenClaw < 2026.4.2 - Approval Integrity Bypass in pnpm dlx Local Script Binding
CVE-2026-41334 6.5 MEDIUM OpenClaw < 2026.3.31 - Decompression Bomb Denial of Service via Image Pixel-Limit Guard By
CVE-2026-41340 6.5 MEDIUM OpenClaw < 2026.3.31 - Authentication Boundary Bypass via Telegram Legacy allowFrom Migrat
CVE-2026-41348 5.4 MEDIUM OpenClaw < 2026.3.31 - Group DM Channel Allowlist Bypass via Discord Slash Commands
CVE-2026-41356 5.4 MEDIUM OpenClaw < 2026.3.31 - Incomplete WebSocket Session Termination in device.token.rotate
CVE-2026-41909 5.4 MEDIUM OpenClaw < 2026.4.20 - Improper Authorization in Paired-Device Pairing Actions
CVE-2026-41344 5.4 MEDIUM OpenClaw < 2026.3.28 - Privilege Escalation via chat.send /verbose Parameter
CVE-2026-41358 5.4 MEDIUM OpenClaw < 2026.4.2 - Sender Allowlist Bypass via Slack Thread Context
CVE-2026-41341 5.4 MEDIUM OpenClaw < 2026.3.31 - Component Interaction Misclassification in Discord Extension
CVE-2026-41337 5.3 MEDIUM OpenClaw < 2026.3.31 - Callback Origin Mutation in Plivo Voice-call Replay
CVE-2026-41346 5.3 MEDIUM OpenClaw 2026.2.26 < 2026.3.31 - Denial of Service via Improper Pending Pairing Request Ca

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: OpenClaw
Same vendor: OpenClaw
Same weakness: CWE-799

V. Comments for CVE-2026-41343

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