What is CVE-2026-41395?

CVE-2026-41395 is a high-severity vulnerability in Openclaw, classified under Missing Cryptographic Step. CVSS score: 7.5/10. Published 2026-04-28.

How severe is CVE-2026-41395?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Openclaw

CVE-2026-41395

OpenClaw before 2026.3.28 contains a webhook replay vulnerability in Plivo V3 signature verification that canonicalizes query ordering for signatures but hashes raw URLs for replay detection. Attackers can reorder query parameters to bypass replay cache detection and trigger duplicate voice-call processing with a captured valid signed webhook.

EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Openclaw — versions 0, 2026.3.28

Weakness classification (CWE)

CWE-325 — Missing Cryptographic Step

References

disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-41395?: CVE-2026-41395 is a high-severity vulnerability in Openclaw, classified under Missing Cryptographic Step. CVSS score: 7.5/10. Published 2026-04-28.
How severe is CVE-2026-41395?: High severity. CVSS v3 base score is 7.5 out of 10.