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WordPress Plugin and Theme Vulnerabilities

high
A06:2021CWE-1035Supply Chain

What is WordPress Vulns?

WordPress plugins and themes are the primary attack vector for WordPress sites. Outdated, abandoned, or malicious plugins introduce vulnerabilities ranging from XSS and SQLi to remote code execution and backdoors.

How it works

Attackers monitor WordPress plugin vulnerability disclosures and build automated exploits. Within hours of a CVE being published, bots scan millions of WordPress sites for the vulnerable plugin version. Abandoned plugins with no security patches remain vulnerable indefinitely. Some plugins include intentional backdoors or phone-home functionality.

Impact

Full site takeover, malware injection, SEO spam, database theft, defacement, and use of the compromised site as part of botnet infrastructure or phishing campaigns.

How ShieldReport detects this

ShieldReport identifies WordPress installations, enumerates plugins and themes via fingerprinting, and cross-references versions against known vulnerability databases. Time-bomb detection identifies plugins with delayed malicious payloads.

How to fix it

Keep all plugins and themes updated. Remove unused plugins entirely. Use only plugins from reputable developers with active maintenance. Implement a web application firewall. Monitor file integrity for unauthorised changes.

Tags

wordpresspluginssupply-chaincms

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