# CVE-2026-114398: Trudesk unrestricted file upload to stored XSS

Source: https://junglewise.ai/threats/cve-2026-114398-trudesk-through-1-2-11-contains-an-unrestricted-file-upload  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-114398 · Severity: medium · CVSS 5.4 · Published 2026-10-21

Trudesk is an open-source help desk and ticketing system. Authenticated users can upload HTML or SVG files disguised as images to the public webroot, enabling stored cross-site scripting (XSS) attacks that run in the browsers of all users viewing the affected instance, potentially leading to account compromise or data theft.

Technologies: [Polonel Trudesk](https://junglewise.ai/threats/technologies/trudesk). Vendors: [Polonel](https://junglewise.ai/threats/vendors/polonel).

## Quick answers

**Is CVE-2026-114398 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114398 being exploited in the wild.

**How severe is CVE-2026-114398?** Medium severity, with a CVSS score of 5.4, published 21 October 2026.

**Which products and versions are affected?** Polonel Trudesk through 1.2.11.

**Is there a fix for CVE-2026-114398?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-114398 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-114398?** Check whether you run Polonel Trudesk at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The uploadlogo, uploadpagelogo, and uploadfavicon endpoints in Trudesk through 1.2.11 perform insufficient MIME type validation, allowing authenticated attackers to spoof image MIME types and upload script-bearing HTML or SVG files. These files are stored in the publicly accessible /assets/ directory and served unauthenticated, enabling stored XSS and branding replacement. Authentication is required to exploit this.

## Affected products

- polonel Trudesk through 1.2.11

## Timeline

- 2026-10-21: disclosed

## References

- [https://github.com/polonel/trudesk](https://github.com/polonel/trudesk)
- [https://github.com/polonel/trudesk/blob/v1.2.11/src/controllers/main.js](https://github.com/polonel/trudesk/blob/v1.2.11/src/controllers/main.js)

## Related threats

- [Trudesk path traversal and authorization bypass in avatar upload](https://junglewise.ai/threats/cve-2026-114402-trudesk-through-1-2-11-contains-a-path-traversal-and)
- [Trudesk missing authentication in ticket attachments](https://junglewise.ai/threats/cve-2026-114400-trudesk-through-1-2-11-contains-a-missing-authentication)
- [Trudesk missing authentication in debug routes](https://junglewise.ai/threats/cve-2026-114397-trudesk-through-1-2-11-contains-a-missing-authentication)
- [Trudesk server-side JavaScript injection in ticket search](https://junglewise.ai/threats/cve-2026-114396-trudesk-through-1-2-11-contains-a-server-side-javascript)
- [Trudesk authorization bypass in apiMessages.send](https://junglewise.ai/threats/cve-2026-114395-trudesk-through-1-2-11-contains-an-authorization-bypass)