WordPress Product Slider Pro for WooCommerce Plugin < 3.5.3 is vulnerable to a high priority Backdoor
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CVSS 10This vulnerability is highly dangerous and expected to become exploited. Vulnerabilities like this one are used in mass-exploit campaigns. Attackers use these to attack thousands of websites at a time, regardless of traffic size or popularity. Learn more.
As immediate action, update the affected plugin. If you're unable to do so, ask your hosting provider or web developer for help.
Note by Patchstack
Due to the vulnerability's specific nature, our virtual patch is best-effort but not comprehensive. Any website that currently has or has had this compromised version of the plugin should be considered compromised.
10
Backdoor
A backdoor is a malicious file which could allow a malicious actor to gain access and exploit your website at any time they desire. One example would be to execute a payload to inject advertisements on your website.
CVSS score is a way to evaluate and rank reported vulnerabilities in a standardized and repeatable way but which is not ideal for WordPress.
Solutions
We advise to mitigate or resolve the vulnerability immediately.
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Patchstack has issued a mitigation rule to block any attacks until an official patch becomes available, can be tested and be safely applied.
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Timeline
21 May, 2026