Vulnerability Intelligence Report
REDAXO before 5.21.4 Missing Authorization in Version and History Previews
CVE-2026-116897
REDAXO core before 5.21.4 contains a missing authorization vulnerability in the structure/version and structure/history frontend preview modes, which do not check category or clang permissions for the previewed article. Any backend user, or one holding history[article_rollback], can set rex_version or rex_history_date with arbitrary article_id values to read unpublished working versions and historic or deleted content.
No Active Exploit Signals
CVSS Base Score
7.1
HIGH
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-862 ↗Missing Authorization
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| redaxo | core | 0 < 5.21.4 (affected), 5.21.4 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-10-27T01:02:44 |
| Published | 2026-10-27T10:59:26 |
| Patch Date | 2026-08-03 |
| Last Updated | 2026-10-27T10:59:26 |
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