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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (29.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.3.31
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-hhq4-97c2-p447 (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/4d038bb242c11f39e45f6a4bde400e5fd42e4ebf (Patch, patch)
- www.vulncheck.com/advisories/openclaw-webhook-replay-cache-cross-target-message… (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.