Neuron — Prompt Injection (CVE-2025-67509)
Date: 2025-12
Affected: neuron-ai/neuron
Attack vector: prompt-injection
Category: vulnerability-disclosure
Severity: Critical
CVE: CVE-2025-67509
CVE-2025-67510
CWE: CWE-250
CWE-284
CWE-94
CVSS: 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N)

Neuron is a PHP framework for creating and orchestrating AI Agents. Versions 2.8.11 and below use MySQLSelectTool, which is vulnerable to Read-Only Bypass. MySQLSelectTool is intended to be a read-only SQL tool (e.g., for LLM agent querying, however, validation based on the first keyword (e.g., SELECT) and a forbidden-keyword list does not block file-writing constructs such as INTO OUTFILE / INTO DUMPFILE. As a result, an attacker who can influence the tool input (e.g., via prompt injection through a public agent endpoint) may write arbitrary files to the DB server if the MySQL/MariaDB account has the FILE privilege and server configuration permits writes to a useful location (e.g., a web-accessible directory). This issue is fixed in version 2.8.12.


Mitigations:

Architectural layers (MAESTRO):