RCE in Openclaw
CVE-2026-100559
OpenClaw versions before 2026.8.1 contain a command parser vulnerability where escaped newlines confuse exec allowlist parsing, allowing hidden commands to execute. Attackers can craft input with escaped newlines to bypass allowlist validation and execute additional commands without expected authorization prompts.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (16.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-9f86-pvv5-rxfw) (vendor-advisory)
- VulnCheck Advisory: OpenClaw before 2026.8.1 Command Injection via Escaped Newlines (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100559?
- CVE-2026-100559 is a high-severity vulnerability in Openclaw, classified under OS Command Injection. CVSS score: 8.0/10. Published 2026-09-26.
- How severe is CVE-2026-100559?
- High severity. CVSS v3 base score is 8.0 out of 10.