CVE-2026-49777

Vulnerability

An Improper Validation of Specified Quantity in Input vulnerability exists in Product Slider Pro for WooCommerce versions prior to 3.5.3. This flaw allows for malicious software to be implanted on the affected system.

Exploitation

An attacker can exploit this vulnerability by implanting malicious software, potentially leading to a backdoor. The vulnerability is expected to be exploited in mass-exploit campaigns, targeting numerous websites regardless of traffic or popularity. Users are advised to update the affected plugin immediately.

Impact

Successful exploitation of this vulnerability can lead to the implantation of malicious software, creating a backdoor that allows an attacker to gain unauthorized access and exploit the website at any time. This could include actions such as injecting advertisements or executing other malicious payloads.

Mitigation

While a fix has been applied by the vendor to an existing release, it was not published as a new version, leaving users unable to reliably determine if they are running a patched installation. Therefore, this is treated as an unpatched version. Users are advised to update the affected plugin. If unable to update, seek assistance from a hosting provider or web developer. Any website that has had this compromised version should be considered compromised [1].