CVE-2026-41343
OpenClaw < 2026.3.31 - Denial of Service via LINE Webhook Handler Pre-Auth Concurrency
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-799 |
| Vendor | openclaw |
| Product | openclaw |
| Published | Apr 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
OpenClaw / OpenClaw
0 < 2026.3.31
References
github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-qcc3-jqwp-5vh2 github.com: https://github.com/openclaw/openclaw/commit/57c47d8c7fbf5a2e70cc4dec2380977968903cad vulncheck.com: https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-line-webhook-handler-pre-auth-concurrency
Credits
🔍 Nathan (@nexrin) KeenSecurityLab