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Application Security

Preventing XSS in Java Spring and JSP applications

OWASP folded XSS into A03:2021-Injection, present in ~3.37% of tested apps — raw JSP EL output and a missing CSP header are still the two most common causes.

Jul 13, 20266 min read
Application Security

Preventing SMTP injection vulnerabilities in email-sending code

A crafted From address turned PHPMailer into a remote code execution bug in 2016 — here's how header injection works and how to stop it.

Jul 13, 20266 min read
Application Security

Preventing insecure deserialization in Node.js

A 2017 node-serialize flaw let attackers turn a signed cookie into remote code execution — here's how deserialization bugs still slip into Node apps.

Jul 13, 20265 min read
Application Security

Using Jakarta Bean Validation correctly: a defensive walkthrough

Jakarta Bean Validation stops malformed input, not attackers — a 2025 Hibernate Validator EL-injection flaw (CVSS 7.3) shows what goes wrong when teams conflate the two.

Jul 13, 20267 min read
Application Security

Java deserialization gadget chains explained

One 2015 talk and a tool called ysoserial turned ordinary Java libraries into remote code execution chains — here's how gadget chains work and how to stop them.

Jul 13, 20266 min read
Application Security

Integrating C/C++ security scanning into CI pipelines

Roughly 70% of CVEs Microsoft assigns each year are memory-safety bugs. Here's how to catch them in C/C++ CI pipelines before they ship.

Jul 13, 20267 min read
Application Security

A practical guide to HTTP security headers: CSP, HSTS, and beyond

A misconfigured checkout page let attackers skim 380,000+ card payments from British Airways in 2018. Here's how CSP, HSTS, and frame-ancestors actually stop attacks like that.

Jul 13, 20266 min read
Application Security

Finding and fixing XXE vulnerabilities across common XML parsers

XXE is tracked as CWE-611 and lives in OWASP's misconfiguration category — because most XML parsers ship unsafe by default.

Jul 13, 20267 min read
Application Security

API security fundamentals: mapping the OWASP API Top 10 to real tests

OWASP's 2023 API Security Top 10 lists 10 risk categories — most start with a single curl request. Here's how to test and fix each one.

Jul 13, 202611 min read

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