CVE-2026-116895: REDAXO before 5.21.5 CSRF via Safe Mode Toggle Parameter

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-27 · updated 2026-10-27
Weakness: CWE-352

Description

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 products

redaxo core: before 5.21.5 — fixed in 5.21.5

How to fix

Upgrade to a fixed version: redaxo core 5.21.5. Check the vendor advisory for mitigations.

References

https://github.com/redaxo/core/security/advisories/GHSA-423v-8x3h-gxr3
https://www.vulncheck.com/advisories/redaxo-before-5.21.5-csrf-via-safe-mode-toggle-parameter

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