XML External Entity (XXE) Injection

High Severity Technical Guide

Vulnerability Description

XXE occurs when an XML parser poorly processes input containing references to external entities, enabling attackers to read local files, execute SSRF attacks, or cause denial of service.

Remediation Guide

To resolve this vulnerability, follow these config changes or developer practices:

Configure XML parsers to completely disable external entity resolution (DOCTYPE declarations and External General Entities).

Verify Your Fix

After applying the remediation, run an external attack-surface scan to verify that the vulnerability is no longer detected by WebScanify.

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