AI agent vulnerability · OpenClaw

CVE-2026-41354: OpenClaw: Zalo replay dedupe keys could suppress messages across chats or senders

mediumCVSS 4.0 6.3GHSA-rxmx-g7hr-8mx4

Summary Before OpenClaw 2026.4.2, Zalo webhook replay dedupe keys were not scoped strongly enough across chat and sender dimensions. Legitimate events from different conversations or senders could collide and be dropped as duplicates. Impact Cross-conversation or cross-sender collisions could cause silent message suppression and break bot workflows. This was an availability issue in webhook event processing.

Published Apr 7, 2026 · Updated May 7, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: <= 2026.4.1
Fixed in: 2026.4.2
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Summary

Before OpenClaw 2026.4.2, Zalo webhook replay dedupe keys were not scoped strongly enough across chat and sender dimensions. Legitimate events from different conversations or senders could collide and be dropped as duplicates.

Impact

Cross-conversation or cross-sender collisions could cause silent message suppression and break bot workflows. This was an availability issue in webhook event processing.

Affected Packages / Versions

Package: openclaw (npm)
Affected versions: <= 2026.4.1
Patched versions: >= 2026.4.2
Latest published npm version: 2026.4.1

Fix Commit(s)

ef7c553dd16ee579f1d1a363f5881a99726c1412 — scope Zalo webhook replay dedupe across the missing event dimensions

Release Process Note

The fix is present on main and is staged for OpenClaw 2026.4.2. Publish this advisory after the 2026.4.2 npm release is live.

Thanks @D0ub1e-D for reporting.

Credited to D0ub1e-D.

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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