---
id: "CVE-2026-125449"
page: "https://infrastack.ai/live/CVE-2026-125449"
kind: "vulnerability"
aliases: ["CVE-2026-125449"]
title: "WordPress Testimonial Slider plugin: untrusted data deserialization allows object injection"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "testimonial-slider-and-showcase", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["other", "php", "self-hosted", "wordpress"]
not_affected_if: ["plugin-not-installed"]
published_at: "2026-11-15T14:17:24+00:00"
first_seen_at: "2026-11-15T14:36:14+00:00"
updated_at: "2026-11-15T14:37:22+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125449", "first_seen_at": "2026-11-15T14:36:14+00:00"}]
exploit_sources: []
---

# WordPress Testimonial Slider plugin: untrusted data deserialization allows object injection

Link for people: https://infrastack.ai/live/CVE-2026-125449 (this .md is for agents)

The Testimonial Slider and Showcase WordPress plugin deserializes untrusted data, which allows PHP object injection. A successful attack can lead to code execution or data access depending on the classes available on the site.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:testimonial-slider-and-showcase affected range not listed fixed no fixed version listed

## How to check

- Check whether the plugin `testimonial-slider-and-showcase` is installed and its version in the WordPress admin Plugins screen
- Compare the installed version against the range stated in the NVD entry (through 3.0.2)

## Fix

- Testimonial Slider: no fixed version stated in the sources; update to a release newer than 3.0.2 once the vendor publishes one

## Timeline

- 2026-11-15T14:36:14+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125449

## From the sources

Deserialization of Untrusted Data vulnerability in Mamunur Rashid Testimonial Slider testimonial-slider-and-showcase allows Object Injection.This issue affects Testimonial Slider: from n/a through 3.0.2.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_