Payload, Stored Cross-Site Scripting, CVE-2026-105862 (High) -DC-Oct2026-2841

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Payload CMS contains a vulnerability related to the sanitization of user-uploaded Scalable Vector Graphics files, tracked as CVE-2026-105862. The flaw exists because the upload paths fail to fully validate and scrub malicious content embedded within SVG files under specific configurations. An authenticated user or attacker capable of uploading files to an affected collection can supply a specially crafted XML-based SVG file containing malicious JavaScript code. Because the application stores this file without complete neutralization, it bypasses the intended sanitization routines. When a victim user downloads and opens the rendered SVG file, the embedded script executes within their browser context. This introduces a stored cross-site scripting vector that can lead to session hijacking, data leakage, or further malicious interactions within the application’s domain framework.

DailyCVE Form:

Platform: Payload CMS
Version: < 3.90.0
Vulnerability : Stored XSS
Severity: High
date: 2026-10-06

Prediction: 2026-09-18

What Undercode Say

Bash Commands and Codes

npm install [email protected]

<svg xmlns="http://www.w3.org/2000/svg">
<script>alert(document.domain)</script>
</svg>

Exploit: (Educational Purposes!)

The exploit involves crafting a malicious `.svg` file containing embedded JavaScript code inside `