| Context | Risk Level | Action | |---------|------------|--------| | Web server access log (as part of a requested URL) | Low to Medium | Could indicate a scanning bot or a misconfigured client. Monitor for repetition. | | Application error log (e.g., Python, Node.js, PHP) | Medium | Suggests a bug in URL/file-handling logic. Review code that constructs URIs. | | Command line or script argument | Medium/High | Accidentally passing this string to a curl or wget might fail harmlessly, but if your script uses it as a variable to fetch data, it could lead to unexpected file system access. | | Security alert from a WAF or IDS | High | Some security rules flag non-standard URI schemes. Investigate the source IP and payload. |
fetch('http://example.com') .then(response => response.text()) .then(data => console.log(data)) .catch(error => console.error('Error:', error)); fetch-url-file-3A-2F-2F-2F
encoded_str = '3A-2F-2F' decoded_str = unquote(encoded_str) | Context | Risk Level | Action |
If you disable webSecurity in Electron’s BrowserWindow , fetch() can access file:/// . This is dangerous for production apps. Review code that constructs URIs
But in the given keyword, there is no trailing path — it stops after three slashes, so it might be an incomplete or truncated log fragment.
While standard browsers block it, there are where fetch('file:///...') does work:
Developers sometimes concatenate strings to form URLs, forgetting to encode or decode properly. For example: