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TI-2026-33072 Aliases CVE-2026-45270GHSA-gqr2-7hcg-rchf

CI4MS: Stored XSS in Pages Module Content via Broken html_purify Validation Rule

Priority HIGH 71CWE-79Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the `Pages` backend module registers the `html_purify` validation rule on language-keyed page content but persists the raw, un-purified POST value into the database. The public renderer for pages (`Home::index()` → `app/Views/templates/default/pages.php`) emits `$pageInfo->content` without `esc()`, yielding stored XSS that fires for every public visitor of the affected page — including administrators. Because pages may be promoted to the site home page, the payload can be served at `/` and reach every visitor of the site. Version 0.31.9.0 patches the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00262 18th percentileScored 2026-11-07
Fix Fixed ci4ms (ci4-cms-erp): 0.31.9.0ci4-cms-erp/ci4ms (Packagist): 0.31.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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 0.31.9.00.31.9.0Patch availableCNA
—ci4-cms-erp/ci4ms (Packagist)before 0.31.9.00.31.9.0Patch availableGHSA-gqr2-7hcg-rchf
  • ci4ms Vendorci4-cms-erp Affected before 0.31.9.0 Fixed in 0.31.9.0 Patch available CNA
  • ci4-cms-erp/ci4ms (Packagist) Vendor— Affected before 0.31.9.0 Fixed in 0.31.9.0 Patch available GHSA-gqr2-7hcg-rchf

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*——ci4-cms-erp
  • cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:* Versions — — ·ci4-cms-erp

Remediation

  • Fix · CNA ci4ms (ci4-cms-erp) Fixed in 0.31.9.0
  • Fix · GHSA-gqr2-7hcg-rchf ci4-cms-erp/ci4ms (Packagist) Fixed in 0.31.9.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45270
  2. 2026-10-03 Alias added: GHSA-gqr2-7hcg-rchf

References

Other 3

  • TI-2026-26819 Improper access control in ci4-cms-erp ci4ms CVSS 3.1HIGH 8.8
  • TI-2026-30140 CI4MS: Unrestricted PHP File Upload via Theme Installation Leads to Authenticated Remote Code Execution CVSS 4.0HIGH 8.6
  • TI-2026-29823 ci4ms Theme::upload is vulnerable to Zip Slip leading to RCE CVSS 4.0CRITICAL 9.4
  • TI-2026-29822 ci4ms Backup::restore is vulnerable to Zip Slip leading to RCE CVSS 4.0CRITICAL 9.4
  • TI-2026-28379 CI4MS has an .env CRLF Injection via Unvalidated `host` Parameter in Install Controller CVSS 3.1CRITICAL 9.8
  • TI-2026-27211 Cross-site scripting in ci4-cms-erp ci4ms CVSS 4.0CRITICAL 9.4
See all 35 →

Sources

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