CVE-2026-41343

Medium

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.

SeverityMedium

CVSS5.3

Exploit probability—

ProductOpenclaw

PublishedApr 23, 2026

First seenApr 23, 2026

Weakness typeCWE-799CWE-799

How to fix

Update

openclaw openclaw2026.3.31 or later
openclaw2026.3.31 or later

Patches

github.com/openclaw/openclaw/commit/57c47d8c7fbf5a2e70cc4dec2380977968903cad

Vendor advisories

github.com/openclaw/openclaw/security/advisories/GHSA-qcc3-jqwp-5vh2

Affected products

Product	Affected versions	Fixed in
openclaw openclaw	v < 2026.3.31	2026.3.31
openclawnpm	v < 2026.3.31	2026.3.31

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