CVE-2025-26763

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

9.8 Critical

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.65%Up 0.6 points since Feb 23, 2025

What each source reports

CVE List Score used 9.8

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

Record: CVE-2025-26763
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

EUVDEUVD-2025-4431 9.8

Record: EUVD-2025-4431
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-388g-hxhw-5c6q 9.8

Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider...

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

Record: GHSA-388g-hxhw-5c6q
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

NVD 9.8

Record: CVE-2025-26763
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

Affected products

metaslider responsive slider by metaslider

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-26763 is a critical vulnerability (CVSS 9.8) in Metaslider Responsive Slider By Metaslider, published February 22, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. No source names a fixed version.