XXE Injection remains one of the most dangerous, yet misunderstood, flaws. If your application processes XML (including SVG or SOAP), it is likely vulnerable to catastrophic attacks.

I published a technical breakdown showing exactly how attackers:

1. Read arbitrary system files (e.g., /etc/passwd).

2. Execute Server-Side Request Forgery (SSRF) against internal networks, including cloud metadata services (169.254.169.254).

3. Perform Blind XXE via out-of-band data exfiltration.

The article includes code snippets for disabling external entity processing across Java, PHP, and .NET.

➡️ Read the full technical analysis here: https://revbrightintl.blogspot.com/2025/12/xml-external-entity-xxe-injection.html