CVE-2026-100559 OpenClaw before 2026.8.1 Command Injection via Escaped Newlines
Attackers can execute arbitrary commands by bypassing allowlist validation using escaped newlines in OpenClaw.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-100559?
CVE-2026-100559 is a high-severity command injection vulnerability in OpenClaw, published on 26 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-78
Which versions are affected by CVE-2026-100559?
How do I fix CVE-2026-100559?
Upgrade to a fixed version.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-100559 being exploited?
There is no known exploitation of CVE-2026-100559 in the wild and no public exploit code.
Sources
Also known as GHSA-9f86-pvv5-rxfw, GHSA-w63f-m9c2-9g74, MINI-8vcp-m24g-m36v.