Description
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.
Published: 2026-04-28
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: Duplicate Voice‑Call Replay
Action: Apply Patch
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-8689-gm9g-jgr6 OpenClaw: Voice-call Plivo V3 webhook replay key uses unsorted URL, allowing replay via query-parameter reordering
History

Wed, 29 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 28 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Description 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.
Title OpenClaw < 2026.3.28 - Webhook Replay via Query Parameter Reordering in Plivo V3
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-325
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 8.2, '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'}


Subscriptions

Openclaw Openclaw
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-29T13:27:00.547Z

Reserved: 2026-04-20T14:13:45.349Z

Link: CVE-2026-41395

cve-icon Vulnrichment

Updated: 2026-04-29T13:26:48.281Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-28T19:37:42.880

Modified: 2026-04-30T20:45:25.643

Link: CVE-2026-41395

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T23:15:43Z

Weaknesses