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.
Advisories
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Fixes
Solution
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Workaround
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References
History
Thu, 23 Apr 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | OpenClaw < 2026.3.31 - Denial of Service via LINE Webhook Handler Pre-Auth Concurrency | |
| First Time appeared |
Openclaw
Openclaw openclaw |
|
| Weaknesses | CWE-799 | |
| CPEs | cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Openclaw
Openclaw openclaw |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-04-24T14:32:21.869Z
Reserved: 2026-04-20T14:05:09.184Z
Link: CVE-2026-41343
No data.
Status : Undergoing Analysis
Published: 2026-04-23T22:16:40.803
Modified: 2026-04-24T14:40:53.523
Link: CVE-2026-41343
No data.
OpenCVE Enrichment
No data.
Weaknesses