REDAXO CSRF via Safe Mode Toggle Parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Tampering
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
REDAXO versions before 5.21.5 contain a cross-site request forgery flaw (CWE-352) because the backend processes the safemode GET parameter in index.php without validating a CSRF token. An attacker can lure a logged-in administrator into opening a crafted link that disables global safe mode by writing safe_mode: false to config.yml, or enables session safe mode, which disables backend addons. CISA rates exploitation as none and does not list the flaw in KEV.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Update REDAXO core to version 5.21.5 or later. The vendor fix is available in 5.21.5.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
- Fix · CNA core (redaxo) Fixed in 5.21.5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
redaxo core 5.21.5
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2026-81103 Missing authorization in REDAXO backup export exposes user tablesPriority LOW 35
- TI-2026-81100 Missing authorization in REDAXO core package APIPriority LOW 29
- TI-2026-81101 Insufficient session expiration in REDAXO lets sessions survive password changesPriority LOW 11
Timeline
- 2026-10-27 Threatist record created from CVE-2026-116895
- 2026-10-27 Alias added: GHSA-qx28-m2wr-99m4
- 2026-11-04 CISA SSVC decision points changed
References
More redaxo vulnerabilities
- TI-2018-15578 Redaxo CMS Mediapool Addon 5.5.1 Arbitrary File Upload CVSS 4.0HIGH 8.7
- TI-2026-17559 Redaxo has Path Traversal in Backup Addon Leading to Arbitrary File Read CVSS 4.0HIGH 8.3
- TI-2026-38656 Unrestricted file upload in redaxo core CVSS 3.1HIGH 7.5
- TI-2025-39517 A Remote Code Execution (RCE) vulnerability in the template management component in… CVSS 3.1HIGH 7.2
- TI-2024-30898 REDAXO CMS v2.11.0 was discovered to contain a remote code execution (RCE) vulnerability. CVSS 3.1HIGH 7.2
- TI-2024-30896 An arbitrary file upload vulnerability in the MediaPool module of Redaxo CMS v5.17.1… CVSS 3.1HIGH 7.2
Sources
- CVE-2026-116895 · CVE Program
- CVE-2026-116895 · NVD
- FIRST EPSS
- GHSA-qx28-m2wr-99m4 · GitHub Advisory Database · CC BY 4.0
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