CVE-2025-67509: MySQLSelectTool Read-Only Bypass via SELECT INTO OUTFILE Allows Arbitrary File Write

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-10 · updated 2026-09-25
Weakness: CWE-94

Description

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.

Affected products

neuron-core neuron-ai: before 2.8.12 — fixed in 2.8.12

How to fix

Upgrade to a fixed version: neuron-core neuron-ai 2.8.12. Check the vendor advisory for mitigations.

References

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