CVE-2026-21857

MEDIUM

6.5

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.16.5

SeveridadeMEDIUM

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

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosHIGH

Interacao do usuarioNONE

Publicado1/7/2026

Ultima modificacao1/20/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

redaxo:redaxo

Fraquezas (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)

Correlacoes IOC

Sem correlacoes registradas

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