---
id: CVE-2026-116893
title: REDAXO core before 5.21.5 Missing Authorization in rex_api_package API
summary: >-
  REDAXO core before 5.21.5 contains a missing authorization vulnerability in
  the rex_api_package API function that lets non-admin backend users manage
  packages with only a valid CSRF token. Attackers holding a token, such as
  demoted admin…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/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: '2026-10-27T10:59:23.400Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116893'
references:
  - url: 'https://github.com/redaxo/core/security/advisories/GHSA-fw98-549m-whxx'
    label: GitHub Security Advisory (GHSA-fw98-549m-whxx)
  - url: >-
      https://github.com/redaxo/core/commit/bd96cf27c2ab919b8320264c9f5502753aa82f28
  - url: >-
      https://www.vulncheck.com/advisories/redaxo-core-before-5.21.5-missing-authorization-in-rex-api-package-api
    label: >-
      VulnCheck Advisory: REDAXO core before 5.21.5 Missing Authorization in
      rex_api_package API
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.293Z'
---

## Overview

REDAXO core before 5.21.5 contains a missing authorization vulnerability in the rex_api_package API function that lets non-admin backend users manage packages with only a valid CSRF token. Attackers holding a token, such as demoted admins with active sessions, can uninstall system addons like structure (dropping their database tables), deactivate, install, or activate packages, and delete non-system packages.

## Affected

- `core < 5.21.5`

## Remediation

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