RCE in Openclaw
CVE-2026-28391
OpenClaw versions prior to 2026.2.2 fail to properly validate Windows cmd.exe metacharacters in allowlist-gated exec requests (non-default configuration), allowing attackers to bypass command approval restrictions. Remote attackers can craft command strings with shell metacharacters like & or %...% to execute unapproved commands beyond the allowlisted operations.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.009 · change: +0.004
Affected products
- Openclaw — versions 0
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-qj77-c3c8-9c3q (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/a7f4a53ce80c98ba1452eb90802d447fca9bf3d6 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-command-injection-via-cmdexe-parsing-bypa… (Third Party Advisory, Broken Link, third-party-advisory)
Frequently asked questions
- What is CVE-2026-28391?
- CVE-2026-28391 is a critical-severity vulnerability in Openclaw, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-03-05.
- How severe is CVE-2026-28391?
- Critical severity. CVSS v3 base score is 9.8 out of 10.