---
id: CVE-2026-116895
title: REDAXO before 5.21.5 CSRF via Safe Mode Toggle Parameter
summary: >-
  REDAXO before 5.21.5 contains a cross-site request forgery vulnerability
  because the backend processes the safemode GET parameter in index.php without
  validating a CSRF token. Attackers can lure a logged-in administrator into
  opening a c…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-352
vendor: redaxo
product: core
affected:
  - core < 5.21.5
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T10:59:24.719Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116895'
references:
  - url: 'https://github.com/redaxo/core/security/advisories/GHSA-423v-8x3h-gxr3'
    label: GitHub Security Advisory (GHSA-423v-8x3h-gxr3)
  - url: >-
      https://www.vulncheck.com/advisories/redaxo-before-5.21.5-csrf-via-safe-mode-toggle-parameter
    label: >-
      VulnCheck Advisory: REDAXO before 5.21.5 CSRF via Safe Mode Toggle
      Parameter
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.291Z'
---

## Overview

REDAXO before 5.21.5 contains a cross-site request forgery vulnerability because the backend processes the safemode GET parameter in index.php without validating a CSRF token. Attackers can lure a logged-in administrator into opening a crafted link to disable global safe mode, writing safe_mode: false to config.yml, or enable session safe mode, disabling backend addons.

## Affected

- `core < 5.21.5`

## Remediation

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