What is CVE-2026-41343?

CVE-2026-41343 is a medium-severity vulnerability in Openclaw, classified under CWE-799. CVSS score: 5.3/10. Published 2026-04-23.

How severe is CVE-2026-41343?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Openclaw

CVE-2026-41343

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…

EPSS: 0.002 (36.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Openclaw — versions 0, 2026.3.31

Weakness classification (CWE)

CWE-799

References

GitHub Security Advisory (GHSA-qcc3-jqwp-5vh2) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.3.31 - Denial of Service via LINE Webhook Handler Pre-Auth Concurrency (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-41343?: CVE-2026-41343 is a medium-severity vulnerability in Openclaw, classified under CWE-799. CVSS score: 5.3/10. Published 2026-04-23.
How severe is CVE-2026-41343?: Medium severity. CVSS v3 base score is 5.3 out of 10.