AI agent vulnerability · OpenClaw

CVE-2026-32066: OpenClaw has unbounded memory growth in Zalo webhook via query-string key churn (unauthenticated DoS)

mediumCVSS 4.0 6.9GHSA-wr6m-jg37-68xh

Summary Unauthenticated requests to a reachable Zalo webhook endpoint could trigger unbounded in-memory key growth by varying query strings on the same valid webhook route. Impact An attacker could cause memory pressure and potential process instability or OOM, degrading availability.

Published Mar 2, 2026 · Updated Mar 23, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: < 2026.3.1
Fixed in: 2026.3.1
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Summary

Unauthenticated requests to a reachable Zalo webhook endpoint could trigger unbounded in-memory key growth by varying query strings on the same valid webhook route.

Impact

An attacker could cause memory pressure and potential process instability or OOM, degrading availability.

Fix

Webhook security tracking now normalizes keys to matched webhook path semantics (query excluded) and bounds/prunes tracking state to prevent unbounded growth.

Affected and Patched Versions

Affected: <= 2026.2.26
Patched: 2026.3.1

Credited to Somet2mes, migraine-sudo.

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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