Auth bypass in Redaxo Core
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one holding history[article_rollback], can set rex_version or rex_history_date with arbitrary article_id values to read unpublished working versions and historic or deleted content.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (11.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
Weakness classification (CWE)
References
- github.com/redaxo/core/security/advisories/GHSA-v4m9-jvvr-83cx (vendor-advisory)
- www.vulncheck.com/advisories/redaxo-before-5.21.4-missing-authorization-in-vers… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116897?
- CVE-2026-116897 is a medium-severity vulnerability in Redaxo Core, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-10-27.
- How severe is CVE-2026-116897?
- Medium severity. CVSS v3 base score is 6.5 out of 10.