---
id: CVE-2026-116896
title: >-
  REDAXO before 5.21.5 Privilege Escalation via Backup Export of Authentication
  Tables
summary: >-
  REDAXO before 5.21.5 contains a missing authorization vulnerability in the
  backup addon export that accepts any database table, allowing non-admin users
  with the backup[export] permission to export rex_user, rex_user_session, and
  other a…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-862
vendor: redaxo
product: core
affected:
  - core < 5.21.5
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T10:59:25.485Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116896'
references:
  - url: 'https://github.com/redaxo/core/security/advisories/GHSA-phjc-vx3j-58r3'
    label: GitHub Security Advisory (GHSA-phjc-vx3j-58r3)
  - url: >-
      https://www.vulncheck.com/advisories/redaxo-before-5.21.5-privilege-escalation-via-backup-export-of-authentication-tables
    label: >-
      VulnCheck Advisory: REDAXO before 5.21.5 Privilege Escalation via Backup
      Export of Authentication Tables
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.291Z'
---

## Overview

REDAXO before 5.21.5 contains a missing authorization vulnerability in the backup addon export that accepts any database table, allowing non-admin users with the backup[export] permission to export rex_user, rex_user_session, and other applications' tables. Attackers can obtain plaintext session ids and stay-logged-in keys to take over admin accounts, or password hashes for offline cracking.

## Affected

- `core < 5.21.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.