Vulnerability Description
@rtk-ai/rtk-rewrite transparently rewrites shell commands executed via OpenClaw's exec tool to their RTK equivalents. In 1.0.0, the @rtk-ai/rtk-rewrite OpenClaw plugin passes attacker-controlled input directly into a shell-backed execSync() template string without shell-safe escaping. JSON.stringify() wraps the value in double quotes and escapes inner double-quotes and backslashes, but leaves $() and backtick shell metacharacters untouched. Because execSync delegates execution to /bin/sh -c, the shell expands $(...) substitutions even inside double-quoted strings, causing the injected subcommand to execute before rtk is invoked. An attacker who can influence the exec tool's command parameter (e.g., via an LLM agent prompt or gateway/tool-call input) achieves arbitrary OS command execution with the privileges of the plugin/gateway process.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rtkai | Rtk-Rewrite | 1.0.0 |
Related Weaknesses (CWE)
References
- https://github.com/rtk-ai/rtk/security/advisories/GHSA-fqgj-m2gp-mr3qExploitPatchThird Party Advisory
- https://github.com/rtk-ai/rtk/security/advisories/GHSA-fqgj-m2gp-mr3qExploitPatchThird Party Advisory
FAQ
What is CVE-2026-55249?
CVE-2026-55249 is a vulnerability with a CVSS score of 6.3 (MEDIUM). @rtk-ai/rtk-rewrite transparently rewrites shell commands executed via OpenClaw's exec tool to their RTK equivalents. In 1.0.0, the @rtk-ai/rtk-rewrite OpenClaw plugin passes attacker-controlled input...
How severe is CVE-2026-55249?
CVE-2026-55249 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55249?
Check the references section above for vendor advisories and patch information. Affected products include: Rtkai Rtk-Rewrite.