PT-2026-35635 · Npm · Openclaw

Published 2026-04-17 · Updated 2026-04-17

OSV

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 openclaw@2026.4.14 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.

Fix

Allocation of Resources Without Limits

Resource Exhaustion

Weakness Enumeration

CWE-770

CWE-400

Related Identifiers

GHSA-VW3H-Q6XQ-JJM5

Affected Products

Openclaw

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-42437 · Security Note
• https://osv.dev/vulnerability/GHSA-vw3h-q6xq-jjm5 · Vendor Advisory
• https://github.com/openclaw/openclaw · Note
• https://github.com/openclaw/openclaw/security/advisories/GHSA-vw3h-q6xq-jjm5 · Note
• https://github.com/openclaw/openclaw/commit/afadb7dae6738819ad9c7d2597ace0516957d20e · Note
• https://github.com/openclaw/openclaw/pull/63890 · Note
• https://vulncheck.com/advisories/openclaw-denial-of-service-via-oversized-websocket-frames-in-voice-call-realtime-path · Note