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vitorallo/
securereview-7b-mlx-4bit

Name: securereview-7b-mlx-4bit
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securereview-7b-mlx-4bit

A 4-bit MLX fine-tune of Qwen2.5-Coder-7B-Instruct for function-level security code review. Input: a code function. Output: structured JSON findings with severity, category, CWE, line number, and description. Runs on Apple Silicon, ~8 GB memory.

Trained on 13,484 examples across 9 languages from CVEFixes, synthetic generation, real vulnerable applications, and community rule sets. All training data is permissively licensed.

Benchmarks

Tested against 33 vulnerable functions from 8 deliberately vulnerable applications (DVNA, NodeGoat, pygoat, crAPI, DSVW, WebGoat, RailsGoat, Juice Shop):

Metric	Base Qwen	securereview-7b
Vulnapp recall	--	94% (31/33)
FPR (clean code)	70%	<3%
F1 (test split)	14%	44%

Detection by category:

Category	Recall
SQL Injection	100%
Command Injection	100%
SSRF	100%
Path Traversal	100%
Broken Access Control	100%
IDOR	86%
Insecure Deserialization	100%
Broken Authentication	100%

Quick start

python

from mlx_lm import load, generate

model, tok = load("vitorallo/securereview-7b-mlx-4bit")
if hasattr(tok, "eos_token_ids") and 151645 not in tok.eos_token_ids:
    tok.eos_token_ids.add(151645)

The model expects a structured prompt with Function, File, Role, Auth, Code fields and a JSON format reminder. See docs/m3_inference_contract.md for the full prompt specification.

Training

Base: Qwen2.5-Coder-7B-Instruct-4bit
Method: QLoRA, rank 8, 8 layers, 1 epoch, lr 1e-4
Data: 13,484 records, 9 languages, multi-rule prompts (2-8 rules per function)
Hardware: Apple Silicon, ~1 hour

Citation

bibtex

@misc{securereview-7b-2026,
  author = {Vito Rallo},
  title  = {securereview-7b: a 7B fine-tune for structured security code review},
  year   = {2026},
  url    = {https://huggingface.co/vitorallo/securereview-7b-mlx-4bit}
}

vitorallo/securereview-7b-mlx-4bit