---
id: CVE-2026-116899
title: REDAXO before 5.21.4 Broken Access Control in Slice Operations
summary: >-
  REDAXO before 5.21.4 contains a broken access control vulnerability that
  allows authenticated editors to modify slices in unauthorized categories by
  pairing a permitted article with a foreign slice id. Attackers can abuse
  content/edit de…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: redaxo
product: core
affected:
  - core < 5.21.4
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T10:59:27.511Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116899'
references:
  - url: 'https://github.com/redaxo/core/security/advisories/GHSA-5m63-c3qx-wq8v'
    label: GitHub Security Advisory (GHSA-5m63-c3qx-wq8v)
  - url: >-
      https://www.vulncheck.com/advisories/redaxo-before-5.21.4-broken-access-control-in-slice-operations
    label: >-
      VulnCheck Advisory: REDAXO before 5.21.4 Broken Access Control in Slice
      Operations
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.294Z'
epss: 0.00181
epssPercentile: 0.0776
---

## Overview

REDAXO before 5.21.4 contains a broken access control vulnerability that allows authenticated editors to modify slices in unauthorized categories by pairing a permitted article with a foreign slice id. Attackers can abuse content/edit delete and edit functions or the content_slice_status and content_move_slice APIs to delete, toggle, move, or overwrite other editors' slices.

## Affected

- `core < 5.21.4`

## Remediation

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