Auth bypass in Openclaw
CVE-2026-27646
OpenClaw versions prior to 2026.3.7 contain a sandbox escape vulnerability in the /acp spawn command that allows authorized sandboxed sessions to initialize host-side ACP runtime. Attackers can bypass sandbox restrictions by invoking the /acp spawn slash-command to cross from sandboxed chat context into host-side ACP session initialization when ACP is enabled.
Vulnerability class: Broken Access Control
Published · last modified .
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:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (3.7th percentile), scored .
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, 2026.3.7
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-9q36-67vc-rrwg) (vendor-advisory, third-party-advisory, Vendor Advisory)
- Patch Commit (Patch, patch)
- VulnCheck Advisory (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-27646?
- CVE-2026-27646 is a medium-severity vulnerability in Openclaw, classified under Incorrect Authorization. CVSS score: 6.1/10. Published 2026-03-23.
- How severe is CVE-2026-27646?
- Medium severity. CVSS v3 base score is 6.1 out of 10.