PT-2026-35779 · Openclaw · Openclaw

Keensecuritylab · Published 2026-04-28 · Updated 2026-04-28 · CVE-2026-41395

NVD

CVSS v3.1

7.5

High

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

Fix

Weakness Enumeration

CWE-325

Related Identifiers

CVE-2026-41395

Affected Products

Openclaw

References · 4

• https://github.com/openclaw/openclaw/security/advisories/GHSA-8689-gm9g-jgr6 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41395 · Security Note
• https://vulncheck.com/advisories/openclaw-webhook-replay-via-query-parameter-reordering-in-plivo-v3 · Note
• https://twitter.com/CVEnew/status/2049227525256061370 · Twitter Post