by Kastro
Paper/Archive/CVE-2026-34989

CVE-2026-34989

ci4-cms-erp ci4ms — CI4MS affected by Profile & User Management Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

EPSS 0.3%public exploitCVSS 9.4
critical.is priorityof 100
43
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 22.4.224 × 204.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 31.0.0.0, the application fails to properly sanitize user-controlled input when users update their profile name (e.g., full name / username). An attacker can inject a malicious JavaScript payload into their profile name, which is then stored server-side. This stored payload is later rendered unsafely in multiple application views without proper output encoding, leading to stored cross-site scripting (XSS). This vulnerability is fixed in 31.0.0.0.

Affected

ProductAffectedFixed inSource
ci4ms< 31.0.0.0–CNA

Scores by source

GitHub_M (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
NVD9.0CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr