Auth bypass in Redaxo Core
CVE-2026-116896
REDAXO before 5.21.5 contains a missing authorization vulnerability in the backup addon export that accepts any database table, allowing non-admin users with the backup[export] permission to export rex_user, rex_user_session, and other applications' tables. Attackers can obtain plaintext session ids and stay-logged-in keys to take over admin accounts, or password hashes for offline cracking.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/redaxo/core/security/advisories/GHSA-phjc-vx3j-58r3 (vendor-advisory)
- www.vulncheck.com/advisories/redaxo-before-5.21.5-privilege-escalation-via-back… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116896?
- CVE-2026-116896 is a high-severity vulnerability in Redaxo Core, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-10-27.
- How severe is CVE-2026-116896?
- High severity. CVSS v3 base score is 7.5 out of 10.