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 broad cache keying to bypass replay protection and deliver duplicate webhook messages to unintended targets.
EPSS: 0.003 (18.2th 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)
References
- disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (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.