CVE-2021-28931 is an arbitrary file upload vulnerability affecting Fork CMS version 5.9.2, allowing authenticated attackers to create or overwrite files within the /themes directory by uploading a specially crafted ZIP file. This vulnerability carries a high CVSS score of 8.8, indicating a severe risk with low attack complexity and potential for high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the underlying CWE-434 (Unrestricted Upload of File with Dangerous Type) highlights a critical security flaw.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
5.9.2CPE matchmatch criteria | cpe:2.3:a:fork-cms:fork_cms:5.9.2:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.