CVE-2026-21857

MEDIUM

6.5

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.16.5

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosHIGH

Interaccion usuarioNONE

Publicado1/7/2026

Ultima modificacion1/20/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

redaxo:redaxo

Debilidades (CWE)

CWE-22CWE-24

Referencias

https://github.com/redaxo/redaxo/releases/tag/5.20.2(security-advisories@github.com)

https://github.com/redaxo/redaxo/security/advisories/GHSA-824x-88xg-cwrv(security-advisories@github.com)

https://github.com/redaxo/redaxo/security/advisories/GHSA-824x-88xg-cwrv(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlaciones IOC

Sin correlaciones registradas

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