AI agent vulnerability · OpenClaw

CVE-2026-42437: OpenClaw: Voice-call realtime WebSocket accepted oversized frames

highCVSS 4.0 8.2 · 3.1 7.5GHSA-vw3h-q6xq-jjm5

Summary Voice-call realtime WebSocket accepted oversized frames. Affected Packages / Versions - Package: openclaw - Ecosystem: npm - Affected versions: = 2026.4.9 = 2026.4.10 Impact The voice-call realtime WebSocket path could accept oversized frames, creating a remote availability risk for deployments exposing that webhook path.

Published Apr 17, 2026 · Updated Jun 8, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: >= 2026.4.9, < 2026.4.10
Fixed in: 2026.4.10
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Summary

Voice-call realtime WebSocket accepted oversized frames.

Affected Packages / Versions

Package: openclaw
Ecosystem: npm
Affected versions: >= 2026.4.9 < 2026.4.10
Patched versions: >= 2026.4.10

Impact

The voice-call realtime WebSocket path could accept oversized frames, creating a remote availability risk for deployments exposing that webhook path.

Technical Details

The fix rejects oversized realtime WebSocket frames before processing them.

Fix

The issue was fixed in #63890. The first stable tag containing the fix is v2026.4.10, and [email protected] includes the fix.

Fix Commit(s)

afadb7dae6738819ad9c7d2597ace0516957d20e
PR: #63890

Release Process Note

Users should upgrade to openclaw 2026.4.10 or newer. The latest npm release, 2026.4.14, already includes the fix.

Reporters

Thanks to G0odUser from ADLab of VenusTech Thanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.

Credited to G0odUser.

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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