What’s Vulnerable › Vulnerabilities

CVE-2026-116896: REDAXO before 5.21.5 Privilege Escalation via Backup Export of Authentication Tables

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-27 · updated 2026-10-31
• Weakness: CWE-862

Description

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.

Affected products

• redaxo core: before 5.21.5 — fixed in 5.21.5

How to fix

Upgrade to a fixed version: redaxo core 5.21.5. Check the vendor advisory for mitigations.

References

• https://github.com/redaxo/core/security/advisories/GHSA-phjc-vx3j-58r3
• https://www.vulncheck.com/advisories/redaxo-before-5.21.5-privilege-escalation-via-backup-export-of-authentication-tables

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