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HIGHCVE-2026-41395Published Modified CNA VulnCheck

CVE-2026-41395: OpenClaw < 2026.3.28 - Webhook Replay via Query Parameter Reordering in Plivo V3

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.

Metrics

CVSS v4.0
8.2
Severity
HIGH
Fixed in
2026.3.28
Affected Products
1

Fix available

2026.3.28
Affected packages
  • OpenClaw / OpenClaw
    < 2026.3.28 (from 0)
    Fixed in 2026.3.28
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
References
CVE-2026-41395: OpenClaw < 2026.3.28 - Webhook Replay via Query Parameter Reordering in Plivo V3 | HarborGuard CVE