PT-2026-32288 · Npm · Openclaw

Published 2026-04-03 · Updated 2026-04-03

OSV

CVSS v3.1

5.3

Medium

Base vector

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

Summary

Telnyx Webhook Replay Detection Bypass via Base64 Signature Re-encoding

Current Maintainer Triage

• Status: narrow
• Normalized severity: low
• Assessment: Shipped v2026.3.28 replay hashing treated equivalent Telnyx Base64/Base64URL signatures as distinct requests, but signature verification still held, so lower to low.

Affected Packages / Versions

• Package: openclaw (npm)
• Latest published npm version: 2026.3.31
• Vulnerable version range: <=2026.3.28
• Patched versions: >= 2026.3.31
• First stable tag containing the fix: v2026.3.31

Fix Commit(s)

• ad77666054651c1fd77b1dc60fd6a8db6600a29a — 2026-03-30T20:01:43+01:00

Release Process Note

• The fix is already present in released version 2026.3.31.
• This draft looks ready for final maintainer disposition or publication, not additional code-fix work.

OpenClaw thanks @AntAISecurityLab for reporting.

Fix

Weakness Enumeration

CWE-294

Related Identifiers

GHSA-37V6-FXX8-XJMX

Affected Products

Openclaw

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-41351 · Security Note
• https://osv.dev/vulnerability/GHSA-37v6-fxx8-xjmx · Vendor Advisory
• https://github.com/openclaw/openclaw · Note
• https://github.com/openclaw/openclaw/commit/ad77666054651c1fd77b1dc60fd6a8db6600a29a · Note
• https://github.com/openclaw/openclaw/security/advisories/GHSA-37v6-fxx8-xjmx · Note
• https://github.com/openclaw/openclaw/releases/tag/v2026.3.31 · Note
• https://vulncheck.com/advisories/openclaw-webhook-replay-detection-bypass-via-base64-signature-re-encoding · Note