CVE-2021-3111 describes a stored Cross-Site Scripting (XSS) vulnerability in Concrete5 version 8.5.4, specifically within the Express Entries Dashboard. An authenticated attacker with high privileges can inject malicious scripts into the "name" field when creating a new data object. This medium-severity vulnerability (CVSS 4.8) requires user interaction and could lead to limited impact on confidentiality and integrity. While not actively exploited in the wild and not on the KEV catalog, public exploit code exists via ExploitDB, though there is minimal community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 8.5.5CPE 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:R/S:C/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.