Fiche vulnérabilité
CVE-2026-21857 : faille moyenne redaxo redaxo (CVSS 6.5)
Description
REDAXO is a PHP-based content management system. Prior to version 5.20.2, authenticated users with backup permissions can read arbitrary files within the webroot via path traversal in the Backup addon's file export functionality. The Backup addon does not validate the `EXPDIR` POST parameter against the UI-generated allowlist of permitted directories. An attacker can supply relative paths containing `../` sequences (or even absolute paths inside the document root) to include any readable file in the generated `.tar.gz` archive. Version 5.20.2 fixes this issue.
En bref
- Sévérité
- Moyenne (CVSS 6.5)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 7 janv. 2026
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- redaxo redaxo