AI agent vulnerability · OpenClaw

GHSA-m958-864j-xq5w: Duplicate Advisory: OpenClaw: Telnyx Webhook Replay Detection Bypass via Base64 Signature Re-encoding

mediumCVSS 4.0 6.3 · 3.1 5.3

This advisory was withdrawn on May 4, 2026. The publisher no longer considers it a valid vulnerability.

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-37v6-fxx8-xjmx. This link is maintained to preserve external references. Original Description 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.

Published Apr 24, 2026 · Updated May 4, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: < 2026.3.31
Fixed in: 2026.3.31
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-37v6-fxx8-xjmx. This link is maintained to preserve external references.

Original Description

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.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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