Vulnerability · Published Oct 27, 2026 · Assigned by VulnCheck

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

High 7.5

In plain English

A high-severity missing authorization in core from redaxo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.2%top 87.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
redaxo	core	0 – before 5.21.5

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-phjc-vx3j-58r3) vendor-advisory
VulnCheck Advisory: REDAXO before 5.21.5 Privilege Escalation via Backup Export of Authentication Tables third-party-advisory