flask example app with PostHog basics #92
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| from app.api import api_bp | ||
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| @api_bp.route("/burrito/consider", methods=["POST"]) |
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| {% block content %} | ||
| <div class="card"> | ||
| <h1>Burrito Consideration Tracker</h1> |
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it doesn't actually matter but if you wanted to be extra kosher these would be sentence case
| }), 500 | ||
| else: | ||
| # Just return error without PostHog capture | ||
| return jsonify({"error": str(e)}), 500 |
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Code scanning / CodeQL
Information exposure through an exception Medium
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AI about 10 hours ago
In general, to fix information exposure via exceptions, the server should avoid returning raw exception messages or stack traces to the client. Instead, log the detailed error on the server side (or send it to an error tracking system) and return a generic, non-sensitive error message to the client, optionally with a reference ID.
In this code, the vulnerable behavior occurs in the else branch of the except block in test_error, which currently returns {"error": str(e)}. The best minimal fix, consistent with existing functionality, is to replace this with a generic error payload that does not include str(e). Since the True branch already defines a pattern ("Operation failed" plus an error ID and friendly message), we can mirror that style: keep the 500 status code and return a generic "Operation failed" and a brief description that no PostHog capture was requested, without including the exception text.
Concretely, in basics/flask/app/api/routes.py, in the test_error function’s else block (around line 56–57), replace jsonify({"error": str(e)}) with a jsonify call that uses a static message, for example:
return jsonify({
"error": "Operation failed",
"message": "An internal error occurred and was not captured in PostHog."
}), 500No new imports or helpers are required.
| @@ -53,7 +53,10 @@ | ||
| "message": f"Error captured in PostHog. Reference ID: {event_id}" | ||
| }), 500 | ||
| else: | ||
| # Just return error without PostHog capture | ||
| return jsonify({"error": str(e)}), 500 | ||
| # Just return a generic error without exposing exception details | ||
| return jsonify({ | ||
| "error": "Operation failed", | ||
| "message": "An internal error occurred and was not captured in PostHog." | ||
| }), 500 | ||
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Wizard skill for the Python framework Flask