Vulnerability · Published Jul 27, 2026 · Assigned by INCIBE
CVE-2026-14856Stored Cross-Site Scripting (XSS) in TastyIgniter Media Manager
Medium 6.3
In plain English
A medium-severity cross-site scripting in TastyIgniter from Media Manager. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Media Manager | TastyIgniter | 4.3.0 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H