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CVE-2026-21857

Redaxo has Path Traversal in Backup Addon Leading to Arbitrary File Read

概要

Redaxo has Path Traversal in Backup Addon Leading to Arbitrary File Read

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

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.

出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

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