Vulnerability Description
The command auto-approval module in Axon Code contains an OS Command Injection vulnerability, rendering its whitelist security mechanism ineffective. The vulnerability stems from the incorrect use of an incompatible command parser (the Unix-based shell-quote library) to analyze commands on the Windows platform, coupled with a failure to correctly handle Windows CMD-specific escape sequences (^). Attackers can exploit this discrepancy between the parsing logic and the execution environment by constructing payloads such as git log ^" & malicious_command ^". The Axon Code parser is deceived by the escape characters, misinterpreting the malicious command connector (&) as being within a protected string argument and thus auto-approving the command. However, the underlying Windows CMD interpreter ignores the escaped quotes, parsing and executing the subsequent malicious command directly. This allows attackers to achieve arbitrary Remote Code Execution (RCE) after bypassing what appears to be a legitimate Git whitelist check.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Matterai | Axon Code | <= 4.123.1 |
Related Weaknesses (CWE)
References
- https://github.com/Secsys-FDU/LLM-Tool-Calling-CVEs/issues/6Issue Tracking
- https://www.matterai.so/Product
FAQ
What is CVE-2026-30303?
CVE-2026-30303 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The command auto-approval module in Axon Code contains an OS Command Injection vulnerability, rendering its whitelist security mechanism ineffective. The vulnerability stems from the incorrect use of ...
How severe is CVE-2026-30303?
CVE-2026-30303 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-30303?
Check the references section above for vendor advisories and patch information. Affected products include: Matterai Axon Code.