Application Security
CWE-492 Inner Classes Containing Sensitive Data in Java
Java inner classes look private in source but compile to package level classes. Sensitive data placed in them is easier to reach than it appears.
Oct 18, 20262 min read
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CWE-491 Public cloneable() Without Final: Java Object Hijack
A non final clone method lets an attacker build an object without running its constructor, skipping your checks. Make the method final to close it.
Oct 18, 20262 min read
Application Security
CWE-49 Trailing Slash Path Equivalence: Auth Bypass Cases
Append a slash to a URL and some servers return source code or skip authentication. How CWE-49 works and how to prevent it.
Oct 18, 20263 min read
Application Security
CWE-489 Active Debug Code: Shipping Backdoors by Accident
Debug functions left on in production become entry points. CWE-489 explains the risk, shows recent device examples and a build check to catch it.
Oct 18, 20263 min read
Application Security
CWE-488 Data Exposed to the Wrong Session: Servlet Fields
Storing user data in a servlet member field lets one user see another's data. Learn how singleton state leaks across sessions and how to keep it per request.
Oct 18, 20263 min read
Application Security
CWE-487 Reliance on Package-level Scope in Java
Java package scope prevents accidents, not attacks. If a package is distributed, anyone can add a class to it and reach your data. Protect with private final.
Oct 18, 20262 min read
Application Security
CWE-486 Comparison of Classes by Name in Java
Trusting an object because its class name matches lets an attacker supply a look alike class. Compare class identity instead of strings.
Oct 18, 20262 min read
Application Security
CWE-484 Omitted Break Statement in Switch: Accidental Fallthrough
A missing break makes one case run the code of the next. Learn why fallthrough bugs are hard to tell from intent and how to make intent explicit.
Oct 18, 20262 min read
Application Security
CWE-483 Incorrect Block Delimitation and the goto fail Bug
Leaving out braces on a multi statement block lets an indented line look guarded when it is not. See how that broke certificate checks and how to prevent it.
Oct 18, 20263 min read
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