# CVE-2026-34563: CI4MS: Backup Management Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM Blind XSS

Source: https://junglewise.ai/threats/cve-2026-34563-ci4ms-backup-management-full-account-takeover-for-all-roles  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-01. Updated: 2026-05-11  
License: CC BY 4.0 with a link back

CVE-2026-34563 · Severity: critical · CVSS 9.9 · Published 2026-04-01

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application fails to properly sanitize user-controlled input when handling backup uploads and processing backup metadata. An attacker can inject a malicious JavaScript payload into the backup filename via the uploaded xss.sql, which uses SQL functionality to insert the XSS payload server-side. This stored payload is later rendered unsafely in multiple backup management views without proper output encoding, leading to stored blind cross-site scripting (Blind XSS). This issue has been patched in version 0.31.0.0.

Technologies: [Ci4-Cms-Erp Ci4ms](https://junglewise.ai/threats/technologies/ci4-cms-erp-ci4ms-1), [ci4-cms-erp/ci4ms (Packagist)](https://junglewise.ai/threats/technologies/ci4-cms-erp-ci4ms). Vendors: [Ci4-Cms-Erp](https://junglewise.ai/threats/vendors/ci4-cms-erp), [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2026-34563 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34563 being exploited in the wild.

**How severe is CVE-2026-34563?** Critical severity, with a CVSS score of 9.9, published 1 April 2026.

**Which products and versions are affected?** ci4-cms-erp/ci4ms (Packagist) <= 0.28.6.0, ECOSYSTEM:introduced=0,fixed=0.31.0.0.

**Is there a fix for CVE-2026-34563?** Yes. ci4-cms-erp/ci4ms (Packagist): upgrade to 0.31.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-34563?** Check whether you run Ci4-Cms-Erp Ci4ms or ci4-cms-erp/ci4ms (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- ci4-cms-erp/ci4ms (Packagist): upgrade to 0.31.0.0 or later

  ```sh
  composer require ci4-cms-erp/ci4ms:^0.31.0.0
  ```


## Affected products

- Ci4-Cms-Erp Ci4ms
- ci4-cms-erp/ci4ms (Packagist) <= 0.28.6.0, ECOSYSTEM:introduced=0,fixed=0.31.0.0

## Identifiers

- CVE-2026-34563
- GHSA-85m8-g393-jcxf

## References

- [https://api.github.com/users/bugmithlegend](https://api.github.com/users/bugmithlegend)
- [https://github.com/bugmithlegend](https://github.com/bugmithlegend)
- [https://api.github.com/users/bugmithlegend/gists%7B/gist_id%7D](https://api.github.com/users/bugmithlegend/gists%7B/gist_id%7D)
- [https://api.github.com/users/bugmithlegend/repos](https://api.github.com/users/bugmithlegend/repos)
- [https://avatars.githubusercontent.com/u/197001595?v=4](https://avatars.githubusercontent.com/u/197001595?v=4)
- [https://api.github.com/users/bugmithlegend/events%7B/privacy%7D](https://api.github.com/users/bugmithlegend/events%7B/privacy%7D)

## Related threats

- [ci4-cms-erp CI4MS stored XSS in Pages module](https://junglewise.ai/threats/cve-2026-45270-ci4-cms-erp-ci4ms-stored-xss-in-pages-module)
- [ci4-cms-erp CI4MS file deletion and rename in Fileeditor module](https://junglewise.ai/threats/cve-2026-45139-ci4-cms-erp-ci4ms-file-deletion-and-rename-in-fileeditor-module)
- [ci4-cms-erp ci4ms stored XSS in Blog and Pages content](https://junglewise.ai/threats/cve-2026-45138-ci4-cms-erp-ci4ms-stored-xss-in-blog-and-pages-content)
- [CI4MS has a Deactivated User Session Bypass (active=0)](https://junglewise.ai/threats/cve-2026-41891-ci4ms-has-a-deactivated-user-session-bypass-active-0)
- [CI4MS Vulnerable to Arbitrary Database Table Drop via Theme deleteProcess](https://junglewise.ai/threats/cve-2026-41890-ci4ms-vulnerable-to-arbitrary-database-table-drop-via-theme)