CVE-2026-116896: REDAXO missing authorization in backup addon export

CVE-2026-116896 · Severity: high · CVSS 7.5 · Published 2026-10-27

REDAXO is a content management system used to build websites and applications. The backup addon, which is intended to help administrators export database backups, fails to properly restrict what tables non-admin users can export. A non-admin user granted backup export permissions can export authentication tables containing plaintext session tokens and password hashes, allowing them to impersonate administrators or crack passwords to gain full system control.

Technologies: REDAXO. Vendors: REDAXO.

Quick answers

Is CVE-2026-116896 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-116896 being exploited in the wild.
How severe is CVE-2026-116896?
High severity, with a CVSS score of 7.5, published 27 October 2026.
Which products and versions are affected?
REDAXO before 5.21.5.
Is there a fix for CVE-2026-116896?
Yes: fixed in 5.21.5. Until then: Do not grant the backup[export] permission to non-admin users unless they are fully trusted, as database exports inherently contain sensitive configuration data including addon credentials.</anigation> </invoke> Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-116896 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-116896?
Check whether you run REDAXO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 5.21.5

Do not grant the backup[export] permission to non-admin users unless they are fully trusted, as database exports inherently contain sensitive configuration data including addon credentials.</anigation> </invoke>

Technical details

The backup addon's export functionality has a missing authorization check: while sensitive tables (rex_user, rex_user_session, rex_user_passkey) were omitted from default selection, they remained accessible and exportable by any non-admin user with the backup[export] permission. An attacker with this permission can export rex_user_session to obtain plaintext session IDs and stay-logged-in keys for account takeover, or rex_user to retrieve password hashes for offline cracking. The vulnerability requires the precondition that an admin has explicitly granted backup[export] to a non-admin user, and affects REDAXO versions before 5.21.5.

Affected products

  • REDAXO REDAXO before 5.21.5

Timeline

  • 2026-10-06: disclosed
  • 2026-10-27: advisory

References

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