CVE-2026-14856 Stored Cross-Site Scripting (XSS) in TastyIgniter Media Manager
Authenticated users can upload malicious SVGs to execute scripts in admin browsers, potentially leading to full administrative account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-14856?
CVE-2026-14856 is a medium-severity cross-site scripting vulnerability in Media Manager TastyIgniter, published on 27 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-14856?
How do I fix CVE-2026-14856?
No fix has been published for CVE-2026-14856 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-14856 being exploited?
There is no known exploitation of CVE-2026-14856 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-h824-gwx2-93j6.