Arbitrary file upload in Polonel Trudesk
CVE-2026-114398
Trudesk through 1.2.11 contains an unrestricted file upload vulnerability that allows any authenticated user to place HTML or SVG files in the public webroot via the uploadlogo, uploadpagelogo and uploadfavicon endpoints. Attackers can spoof an image MIME type to upload script-bearing files served unauthenticated from /assets/, enabling stored cross-site scripting and replacement of instance branding.
Vulnerability class: Unrestricted File Upload
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@leediay/multiple-vuln-trudesk-1211 (third-party-advisory)
- github.com/polonel/trudesk/blob/v1.2.11/src/controllers/main.js (technical-description)
- github.com/polonel/trudesk/blob/v1.2.11/src/routes/index.js (technical-description)
- github.com/polonel/trudesk (product)
- www.vulncheck.com/advisories/trudesk-through-1.2.11-unrestricted-file-upload-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-114398?
- CVE-2026-114398 is a medium-severity vulnerability in Polonel Trudesk, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.4/10. Published 2026-10-21.
- How severe is CVE-2026-114398?
- Medium severity. CVSS v3 base score is 5.4 out of 10.