Error Message Leakage
A new tool extracted from the codebase.
Last reviewed by the Radiatus Cloud team
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Radiatus delivers secure cloud, DevOps & compliance engineering.
Check errors for leaked information
Error messages can leak information useful to an attacker, and reviewing them is a defensive practice. This tool helps check error messages for information leakage, so you can find messages that reveal too much.
Why error messages leak
A detailed error message is helpful to a developer and to an attacker alike: a stack trace reveals your framework and file paths, a database error exposes your schema, a verbose failure hints at how the system works. Attackers probe applications specifically to trigger revealing errors during reconnaissance. Checking error messages for the details they disclose, and ensuring production shows users a generic message while logging the detail privately, closes this common information-disclosure gap. This is defensive review of your own application’s error handling, which is easy to leave too verbose.
Reveal less in errors
It runs entirely in your browser, so nothing you paste is uploaded, which matters when the input is your own code, configuration or security-sensitive data.
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Frequently Asked Questions
How do error messages leak information?
A stack trace reveals your framework and file paths, a database error exposes your schema, and verbose failures hint at how the system works.
Why do attackers care about errors?
Because they probe applications to trigger revealing errors during reconnaissance, learning about the system from what the errors disclose.
What is the fix?
Show users a generic error message in production while logging the detail privately, so developers get the information but attackers do not.
Is this for my own application?
Yes. It is defensive review of your own error handling, catching messages that disclose too much before an attacker exploits them.
Is my input uploaded?
No. The tool runs entirely in your browser.
Privacy & Security
Processed locally.
About This Tool
This tool runs entirely in your browser. No data is sent to any server, ensuring complete privacy. Simply use the interface above to get started — no registration or login required.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
Related Tools
User Agent Parser
UtilityParse a User-Agent string into browser, engine, operating system and device. Explains why UA strings are unreliable and what to use instead.
QR Code Generator
UtilityGenerate QR codes for URLs, text, Wi-Fi and contact details. Adjustable error correction and size, produced entirely in your browser.
Credit Card Validator
UtilityValidate a card number with the Luhn algorithm and identify the issuing network from its prefix. Runs locally, nothing is transmitted.