Replay Attack Affecting @openclaw/voice-call package, versions <2026.5.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published5 Apr 2026
- disclosed3 Apr 2026
- creditAntAISecurityLab
Introduced: 3 Apr 2026
CVE-2026-41351 (opens in a new tab)How to fix?
Upgrade @openclaw/voice-call to version 2026.5.2 or higher.
Overview
@openclaw/voice-call is an OpenClaw voice-call plugin
Affected versions of this package are vulnerable to Replay Attack via the webhook signature verification process. An attacker can bypass replay detection by submitting requests with equivalent Base64 and Base64URL-encoded signatures, causing the system to treat them as distinct and allowing replayed requests to be accepted.