CVE-2026-14856: Stored Cross-Site Scripting (XSS) in TastyIgniter Media Manager

Published Jul 27, 2026

Updated

A stored Cross-Site Scripting (XSS) vulnerability in the file upload functionality of the Media Manager in TastyIgniter v4.3.0, caused by insufficient validation and sanitization of SVG files. An authenticated user with low privileges can upload a malicious SVG file containing JavaScript code. When an administrator views that file, the code executes in the context of their browser. By chaining this vulnerability with a Cross-Site Request Forgery (CSRF) attack, an attacker can extract the administrator’s CSRF token and perform unauthorized actions—such as modifying credentials—thereby gaining full control of the administrative account.

Affected Software

1 affected component

TastyIgniter Media Manager=4.3.0

Event History

Jul 27, 2026

CVE Published

via MITRE·10:15 AM

Data Sourced

via MITRE·10:15 AM

RemedyDescriptionWeakness

Data Sourced

via NVD·12:16 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2026-14856?

CVE-2026-14856 has a medium severity score of 6.3.

What type of vulnerability is CVE-2026-14856?

CVE-2026-14856 is a Stored Cross-Site Scripting (XSS) vulnerability.

How do I fix CVE-2026-14856?

To fix CVE-2026-14856, ensure proper validation and sanitization of uploaded SVG files in the TastyIgniter Media Manager.

Who is affected by CVE-2026-14856?

Authenticated users with low privileges in TastyIgniter v4.3.0 are affected by CVE-2026-14856.

What can an attacker do with CVE-2026-14856?

An attacker can upload a malicious SVG file containing JavaScript code, potentially executing it in the context of the user's session.