Arbitrary file upload in Danielbrendel Hortusfox-Web
CVE-2026-108101
HortusFox (hortusfox-web) through 6.3 contains an unrestricted file upload vulnerability in PlantAttachmentModel that allows authenticated users to store files with client-supplied extensions under public/attachments/. Attackers can upload HTML or SVG files via /plants/attachments/add for stored cross-site scripting, or PHP files where .htaccess is unenforced to execute code.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
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
- github.com/danielbrendel/hortusfox-web (product)
- github.com/danielbrendel/hortusfox-web/security/advisories/GHSA-8phf-v3xj-8jjg (vendor-advisory)
- hackmd.io/@leediay/stored-xss-hortusfox-via-plant-attachment (technical-description)
- github.com/danielbrendel/hortusfox-web/blob/v6.3/app/models/PlantAttachmentMode… (technical-description)
- github.com/danielbrendel/hortusfox-web/blob/v6.3/app/resources/js/app.js (technical-description)
- www.vulncheck.com/advisories/hortusfox-through-6.3-unrestricted-file-upload-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108101?
- CVE-2026-108101 is a high-severity vulnerability in Danielbrendel Hortusfox-Web, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.5/10. Published 2026-10-09.
- How severe is CVE-2026-108101?
- High severity. CVSS v3 base score is 7.5 out of 10.