CVE-2026-117534: REDAXO before 5.21.3 CSRF in Article History Plugin

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 5.21.3 contains a cross-site request forgery vulnerability in the structure/history plugin that allows attackers to delete history or roll back content via unvalidated GET requests. Attackers can lure logged-in backend users to a page triggering func=clearall or rex_history_function=snap, permanently deleting all article snapshots or reverting articles to earlier states.

Affected products

redaxo core: before 5.21.3 — fixed in 5.21.3

How to fix

Upgrade to a fixed version: redaxo core 5.21.3. Check the vendor advisory for mitigations.

References

https://github.com/redaxo/core/security/advisories/GHSA-vjwx-3c33-xwmc
https://www.vulncheck.com/advisories/redaxo-before-5.21.3-csrf-in-article-history-plugin

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