What is CVE-2026-35626?

CVE-2026-35626 is a medium-severity vulnerability in Openclaw, classified under Asymmetric Resource Consumption (Amplification). CVSS score: 5.3/10. Published 2026-04-09.

How severe is CVE-2026-35626?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Openclaw

CVE-2026-35626

OpenClaw before 2026.3.22 contains an unauthenticated resource exhaustion vulnerability in voice call webhook handling that buffers request bodies before provider signature checks. Attackers can send large or malicious webhook requests to…

EPSS: 0.001 (31.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Openclaw — versions 0, 2026.3.22

Weakness classification (CWE)

CWE-405 — Asymmetric Resource Consumption (Amplification)

References

GitHub Security Advisory (GHSA-rm59-992w-x2mv) (third-party-advisory)
Patch Commit #1 (patch)
Patch Commit #2 (patch)
VulnCheck Advisory: OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook (third-party-advisory)

Frequently asked questions

What is CVE-2026-35626?: CVE-2026-35626 is a medium-severity vulnerability in Openclaw, classified under Asymmetric Resource Consumption (Amplification). CVSS score: 5.3/10. Published 2026-04-09.
How severe is CVE-2026-35626?: Medium severity. CVSS v3 base score is 5.3 out of 10.