PT-2026-30542 · Npm · Openclaw

Published 2026-03-26 · Updated 2026-03-26

OSV

CVSS v4.0

6.6

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

Summary

Voice Call webhook handling buffered request bodies before provider signature checks, enabling bounded unauthenticated resource exhaustion.

Affected Packages / Versions

• Package: openclaw (npm)
• Affected: < 2026.3.22
• Fixed: >= 2026.3.22
• Latest released tag checked: v2026.3.23-2 (630f1479c44f78484dfa21bb407cbe6f171dac87)
• Latest published npm version checked: 2026.3.23-2

Fix Commit(s)

• 651dc7450b68a5396a009db78ef9382633707ead

Release Status

The fix shipped in v2026.3.22 and remains present in v2026.3.23 and v2026.3.23-2.

Code-Level Confirmation

• extensions/voice-call/src/webhook.ts now enforces header gating and shared pre-auth body caps before reading attacker-controlled request bodies.
• extensions/voice-call/src/webhook.test.ts ships regression coverage for missing-signature, oversize, and timeout pre-auth webhook cases.

OpenClaw thanks @SEORY0 for reporting.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

GHSA-RM59-992W-X2MV

Affected Products

Openclaw

References · 7

• https://osv.dev/vulnerability/GHSA-rm59-992w-x2mv · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35626 · Security Note
• https://github.com/openclaw/openclaw · Note
• https://github.com/openclaw/openclaw/security/advisories/GHSA-rm59-992w-x2mv · Note
• https://github.com/openclaw/openclaw/commit/651dc7450b68a5396a009db78ef9382633707ead · Note
• https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87 · Note
• https://vulncheck.com/advisories/openclaw-unauthenticated-resource-exhaustion-via-voice-call-webhook · Note