BdThemes Plugins Supply-Chain Hack Compromises Over 350,000 WordPress Sites
In August 2026, BdThemes, a developer of premium WordPress plugins, experienced a supply-chain attack where a threat actor compromised their infrastructure. The attacker modified a remote JSON feed used by the Biggopti component to display promotional banners in WordPress admin dashboards. By exploiting a cross-site scripting (XSS) vulnerability introduced in March 2026, the malicious code created rogue administrator accounts and installed a webshell for persistent access. This stealthy attack affected over 350,000 active installations, as BdThemes' flagship Element Pack plugin alone had more than 100,000 active installations. The WordPress Plugins team responded by removing the affected plugins from the directory pending a full review. This incident underscores the growing threat of supply-chain attacks targeting widely-used software components. The exploitation of an XSS vulnerability in a promotional banner highlights the need for rigorous security practices in all aspects of software development and distribution. Organizations must remain vigilant, as similar tactics have been observed in other recent attacks, such as those involving the OptinMonster plugin. ([sansec.io](https://sansec.io/research/optinmonster-supply-chain-attack?utm_source=openai))
Kill Chain