CVE-2026-41351
CVE-2026-41351 · OpenClaw < 2026.3.31 - Webhook Replay Detection Bypass via Base64 Signature Re-encoding
This page contains facts from public vulnerability sources. Check the original advisory before updating.
OpenClaw before 2026.3.31 contains a replay detection bypass vulnerability in webhook signature handling that treats Base64 and Base64URL encoded signatures as distinct requests. Attackers can re-encode Telnyx webhook signatures to bypass replay detection while maintaining valid signature verification.
CVSS 6.3 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
Original sources
- https://github.com/openclaw/openclaw/security/advisories/GHSA-37v6-fxx8-xjmx
- https://github.com/openclaw/openclaw/commit/ad77666054651c1fd77b1dc60fd6a8db6600a29a
- https://www.vulncheck.com/advisories/openclaw-webhook-replay-detection-bypass-via-base64-signature-re-encoding
- https://nvd.nist.gov/vuln/detail/CVE-2026-41351