CVE-2021-28931

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

Arbitrary file upload vulnerability in Fork CMS 5.9.2 allows attackers to create or replace arbitrary files in the /themes directory via a crafted zip file uploaded to the Themes panel.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-434

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/bousalman/ForkCMS-arbitrary-upload/blob/main/README.mdThird Party Advisory
https://github.com/forkcms/forkcms/releases/tag/5.9.2Release Notes, Third Party Advisory
https://github.com/bousalman/ForkCMS-arbitrary-upload/blob/main/README.mdThird Party Advisory
https://github.com/forkcms/forkcms/releases/tag/5.9.2Release Notes, Third Party Advisory

Timeline

Published: Jul 7, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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