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  5. CVE-2026-34557

CVE-2026-34557: CI4MS: Permissions Management Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

April 1, 2026

The application fails to properly sanitize user-controlled input within group and role management functionality. Multiple input fields (three distinct group-related fields) can be injected with malicious JavaScript payloads, which are then stored server-side.

These stored payloads are later rendered unsafely within privileged administrative views without proper output encoding, leading to stored cross-site scripting (XSS) within the role and permission management context.

References

  • github.com/advisories/GHSA-rpjr-985c-qhvm
  • github.com/ci4-cms-erp/ci4ms
  • github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-rpjr-985c-qhvm
  • nvd.nist.gov/vuln/detail/CVE-2026-34557

Code Behaviors & Features

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Affected versions

All versions before 0.31.0.0

Fixed versions

  • 0.31.0.0

Solution

Upgrade to version 0.31.0.0 or above.

Impact 9.1 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

packagist/ci4-cms-erp/ci4ms/CVE-2026-34557.yml

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