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TI-2026-27211 Aliases CVE-2026-34989GHSA-vr2g-rhm5-q4jr

Cross-site scripting in ci4-cms-erp ci4ms

Priority HIGH 76CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting, Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79 and CWE-269.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed ci4ms (ci4-cms-erp): 31.0.0.0ci4-cms-erp/ci4ms (Packagist): 31.0.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ci4-cms-erpci4msbefore 31.0.0.031.0.0.0Patch availableCNA
—ci4-cms-erp/ci4ms (Packagist)before 31.0.0.031.0.0.0Patch availableGHSA-vr2g-rhm5-q4jr
  • ci4ms Vendorci4-cms-erp Affected before 31.0.0.0 Fixed in 31.0.0.0 Patch available CNA
  • ci4-cms-erp/ci4ms (Packagist) Vendor— Affected before 31.0.0.0 Fixed in 31.0.0.0 Patch available GHSA-vr2g-rhm5-q4jr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*before 0.31.0.0Vulnerableci4-cms-erp
  • cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:* Versions before 0.31.0.0 Vulnerable ·ci4-cms-erp

Remediation

  • Fix · CNA ci4ms (ci4-cms-erp) Fixed in 31.0.0.0
  • Fix · GHSA-vr2g-rhm5-q4jr ci4-cms-erp/ci4ms (Packagist) Fixed in 31.0.0.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34989
  2. 2026-10-03 Alias added: GHSA-vr2g-rhm5-q4jr

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-26819 Improper access control in ci4-cms-erp ci4ms CVSS 3.1HIGH 8.8
  • TI-2026-28379 CI4MS has an .env CRLF Injection via Unvalidated `host` Parameter in Install Controller CVSS 3.1CRITICAL 9.8
  • TI-2026-26820 Cross-site scripting in ci4-cms-erp ci4ms CVSS 3.1CRITICAL 10.0
  • TI-2026-26818 CI4MS: Blogs Categories Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS CVSS 3.1CRITICAL 10.0
  • TI-2026-27238 Cross-site scripting in ci4-cms-erp ci4ms CVSS 3.1CRITICAL 9.0
  • TI-2026-26821 Improper access control in ci4-cms-erp ci4ms CVSS 3.1HIGH 8.8
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences