CVE-2021-36766 is a critical deserialization vulnerability affecting Concrete5 through version 8.5.5, specifically within the Logging::update_logging() method. This flaw allows authenticated attackers to inject arbitrary PHP objects via the logFile parameter, leading to potential remote code execution. With a CVSS score of 7.2 (HIGH), it presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. There is currently no public exploit code available, nor is it known to be actively exploited in the wild, and it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 8.5.6CPE matchmatch criteria | cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* |
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.