CVE-2026-34571 is a critical Stored Cross-Site Scripting (XSS) vulnerability affecting CI4MS, a CodeIgniter 4-based CMS, in versions prior to 0.31.0.0. This flaw allows attackers to inject persistent JavaScript code into the backend user management interface due to improper input sanitization. Rated with a CVSS score of 9.9 (CRITICAL), it enables network-based attacks with low complexity and low privileges, requiring no user interaction. Successful exploitation can lead to session hijacking, privilege escalation, and full administrative account compromise. While there is no evidence of active exploitation (KEV: No) or public exploit code, the vulnerability has garnered community attention, with discussions highlighting its criticality.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.31.0.0CPE matchmatch criteria | cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.6 Bluesky, 0.3 Mastodon, and 1.6 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.