CVE-2021-37770 describes a high-severity file upload vulnerability in Nucleus CMS v3.71. An authenticated attacker can manipulate the upload path to bypass .htaccess protections, upload a malicious .htaccess file to enable PHP execution for image files, and then upload a web shell disguised as an image. This allows for arbitrary command execution, leading to full compromise of website resources. While the CVSS score is 7.2, there is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a lower immediate threat despite the high potential impact.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
3.71CPE matchmatch criteria | cpe:2.3:a:nucleuscms:nucleus_cms:3.71:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 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.
Remediation records are not available for this CVE.