What is CVE-2026-35667?

CVE-2026-35667 is a medium-severity vulnerability in Openclaw, classified under Improper Resource Shutdown or Release. CVSS score: 6.1/10. Published 2026-04-10.

How severe is CVE-2026-35667?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Openclaw

CVE-2026-35667

OpenClaw before 2026.3.24 contains an incomplete fix for CVE-2026-27486 where the !stop chat command uses an unpatched killProcessTree function from shell-utils.ts that sends SIGKILL immediately without graceful SIGTERM shutdown. Attackers can trigger process termination via the !stop command, causing data corruption, resource leaks, and skipped security-sensitive cleanup operations.

Published 2026-04-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

EPSS: 0.002 (3.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

Openclaw — versions 0, 2026.3.24

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release

References

github.com/openclaw/openclaw/security/advisories/GHSA-3298-56p6-rpw2 (Exploit, vendor-advisory, Vendor Advisory, third-party-advisory)
www.vulncheck.com/advisories/openclaw-improper-process-termination-via-unpatche… (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-35667?: CVE-2026-35667 is a medium-severity vulnerability in Openclaw, classified under Improper Resource Shutdown or Release. CVSS score: 6.1/10. Published 2026-04-10.
How severe is CVE-2026-35667?: Medium severity. CVSS v3 base score is 6.1 out of 10.