On July 28th, 2026, our autonomous AI vulnerability intelligence agent, Wordfence PRISM, identified a critical Authentication Bypass backdoor in Advanced Responsive Video Embedder, a WordPress plugin with approximately 20,000 active installations, less than two hours after the malicious code was introduced.
This is not a conventional coding mistake, it’s a supply chain attack that has become increasingly more common in the wild. The plugin had been backdoored, with a deliberately concealed function, granting any unauthenticated attacker full administrative access to affected sites by supplying a single hardcoded token. Given that exploitation requires no credentials, no user interaction, and just
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