CVE-2026-41395CWE-325

OpenClaw < 2026.3.28 - Webhook Replay via Query Parameter Reordering in Plivo V3

High · published April 28, 2026

CVSS v4.0
8.2
EPSS
0%
Percentile
15.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.2 · HIGH
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
EPSS
0.00253 · 15.9th percentile
Weakness
CWE-325 · Missing Cryptographic Step
Published
2026-04-28T18:09Z
EPSS history
Timeline
  • 28 APR 18:09Z
    OpenClaw < 2026.3.28 - Webhook Replay via Query Parameter Reordering in Plivo V3
    cvelistv5