CVE-2025-26763 CRITICAL

CVE-2025-26763: WordPress Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider Plugin <= 3.94.0 - PHP Object Injection vulnerability

Vendor Metaslider
Product Responsive Slider by MetaSlider
Weakness CWE-502 · Unsafe deserialization
Published February 22, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider ml-slider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through <= 3.94.0.

Explanation of Vulnerability in Simple Terms

02Summary

Responsive Slider by MetaSlider versions up to 3.94.0 contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary PHP code on the site. The vulnerability requires no user interaction and can be exploited remotely over the network. Site administrators should update immediately to a version newer than 3.94.0.

What an attacker can do

03Attacker Capabilities

Run arbitrary PHP code on the site without authentication.

Potential impact on your site

04Site Impact

Complete site compromise: attackers can steal data, modify content, install malware, or take the site offline.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

February 22, 2025 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE

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