What is CVE-2026-41402?

CVE-2026-41402 is a medium-severity vulnerability in Openclaw, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 4.2/10. Published 2026-04-28.

How severe is CVE-2026-41402?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in Openclaw

CVE-2026-41402

OpenClaw before 2026.3.31 contains a scope bypass vulnerability in webhook replay cache deduplication that allows authenticated attackers to replay messages across sibling targets using the same messageId. Attackers can exploit overly broa…

EPSS: 0.000 (11.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Openclaw — versions 0, 2026.3.31

Weakness classification (CWE)

CWE-706 — Use of Incorrectly-Resolved Name or Reference

References

GitHub Security Advisory (GHSA-hhq4-97c2-p447) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.3.31 - Webhook Replay Cache Cross-Target messageId Scope Bypass (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-41402?: CVE-2026-41402 is a medium-severity vulnerability in Openclaw, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 4.2/10. Published 2026-04-28.
How severe is CVE-2026-41402?: Medium severity. CVSS v3 base score is 4.2 out of 10.