CVE-2026-108101: File Upload RCE (CVSS 7.5)

Description

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0039

Probability of exploitation

0.32%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-434 Unrestricted Upload

References

Other References

https://github.com/danielbrendel/hortusfox-web https://github.com/danielbrendel/hortusfox-web/blob/v6.3/app/models/PlantAttachmentModel.php#L28-L31 https://github.com/danielbrendel/hortusfox-web/blob/v6.3/app/resources/js/app.js#L466 https://github.com/danielbrendel/hortusfox-web/security/advisories/GHSA-8phf-v3xj-8jjg https://hackmd.io/@leediay/stored-xss-hortusfox-via-plant-attachment https://www.vulncheck.com/advisories/hortusfox-through-6.3-unrestricted-file-upload-via-plant-attachments

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-108101? +

CVE-2026-108101 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0039, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-108101? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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