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Malware Campaign Exploits Popup Builder WordPress Plugin to Infect 3,900+ Sites

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A new malware campaign is leveraging a high-severity security flaw in the Popup Builder plugin for WordPress to inject malicious JavaScript code. According to Sucuri, the campaign has  infected more than 3,900 sites  over the past three weeks. "These attacks are orchestrated from domains less than a month old, with registrations dating back to February 12th, 2024," security researcher Puja Srivastava  said  in a report dated March 7. Infection sequences involve the exploitation of CVE-2023-6000, a security vulnerability in Popup Builder that could be exploited to create rogue admin users and install arbitrary plugins. The shortcoming was exploited as part of a  Balada Injector campaign  earlier this January, compromising no less than 7,000 sites. The latest set of attacks lead to the injection of malicious code, which comes in two different variants and is designed to redirect site visitors to other sites such as phishing and scam pages. WordPress site owners are recommended