WordPress Vulnerability
18
Guides
WordPress Attachment API Functions and Any Post Type: The Hidden Risk
Attachment handling is security-sensitive because files, metadata, authorship, and post relationships meet in one place. Treat upload and attachment helpers as privileged code.
WordPress and PHAR Unserialize: Why File Handling Can Become Code Risk
PHAR unserialize risk is about file operations becoming object-deserialization triggers. If a plugin lets attackers influence file paths, normal-looking checks can become dangerous.
WordPress and Multiple maybe_unserialize Calls: When Data Parsing Gets Risky
Repeated unserialization is a smell. If user-influenced data is parsed again and again, developers should ask whether the application is normalizing data or accidentally expanding attacker control.
WordPress Importer and _wp_attached_file: Why Imports Need Security Review
Importers create content and file references from external data. If the importer trusts attachment metadata too much, a migration file can become a security boundary problem.
WordPress Upload Any File with an Image Extension: Why Extension Checks Fail
A file ending in .jpg is not automatically an image. Upload security must validate content, storage location, execution rules, and user capability.
WordPress Null Byte to RCE: What an Old 0-Day Pattern Teaches Us
Null byte issues are old, but the lesson is current: never trust file names, extensions, or paths until the exact runtime behavior is understood.
WordPress Write Image to Any Directory RCE: File Writes and Code Execution
An arbitrary file write becomes urgent when attackers can choose both content and location. If executable paths are reachable, image handling can turn into code execution.
WordPress Arbitrary File Delete: How a Small Path Bug Can Break a Site
Arbitrary file delete is serious because deleting the right file can disable security controls, break the site, or set up a second-stage takeover.