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OpenAdvisories
High WID-SEC-2026-1835 15 CVEs

TYPO3 Core: Mehrere Schwachstellen

Published Jun 8, 2026 · Updated Jun 9, 2026 · Revision 2 · de-DE

Vendor: TYPO3 Product: Core Platform: Linux Platform: Windows

Summary

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in TYPO3 Core ausnutzen, um Sicherheitsbeschränkungen zu umgehen, Benutzer auf schädliche Websites umzuleiten, beliebigen Code auszuführen, Berechtigungen zu eskalieren oder andere Auswirkungen zu verursachen.

Product

TYPO3 ist ein freies Content-Management-System, basierend auf der Scriptsprache PHP und einer SQL-Datenbank. Über zahlreiche Extensions kann der Funktionsumfang der Core-Installation individuell erweitert werden.

Vulnerabilities 15

  • High 8.7
    CVE-2026-49741

    TYPO3 CMS - Privilege Escalation & SQL Injection in Form Framework

    Backend users with write access to the form_definition database table were able to directly create, update, or delete form definition records via DataHandler, bypassing the Form Framework's persistence validation and permission checks. This allowed injecting …

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-form Web / CMS Packagist
  • High 7.6
    CVE-2026-11607

    TYPO3 CMS - Broken Access Control in Form Framework

    Backend users with access to the Form Framework were able to use files not ending in .form.yaml as form definitions, which were processed without denying the incorrect file extension. Maliciously crafted form definition files can be used to execute arbitrary …

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-form Web / CMS Packagist
  • High 7.6
    CVE-2026-47346

    TYPO3 CMS - Broken Access Control in Form Framework

    Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL…

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-form Web / CMS Packagist
  • High 7.2
    CVE-2026-47343

    TYPO3 CMS - Destructive Actions on File Mount Folders

    Non-privileged backend users with file mount access were able to perform write operations (move, delete, rename) on folders representing the root of an active file mount due to missing authorization restrictions. This issue affects TYPO3 CMS versions before 1…

    TYPO3 TYPO3 CMS typo3/cms-core Web / CMS Packagist
  • High 7.1
    CVE-2026-49742

    TYPO3 CMS - Broken Access Control in Media Module

    Backend users with file download permissions were able to download files from the fallback storage of the file abstraction layer (FAL) via the Media Module. Since the fallback storage resolves paths relative to the server's document root, this could expose se…

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-filelist Web / CMS Packagist
  • Medium 6.3
    CVE-2026-49740

    TYPO3 CMS - Insecure Deserialization in Core API

    TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry data…

    TYPO3 TYPO3 CMS typo3/cms-core Web / CMS Packagist
  • Medium 5.3
    CVE-2026-47347

    TYPO3 CMS - Open Redirect in Core Utilities

    Applications that use GeneralUtility::sanitizeLocalUrl to allow only local URLs are vulnerable to open redirect attacks if the URL is used after it has passed the aforementioned sanitization checks. This enables attackers to redirect users to external content…

    TYPO3 TYPO3 CMS typo3/cms-core Web / CMS Packagist
  • Medium 5.3
    CVE-2026-47349

    TYPO3 CMS - Broken Access Control in Recycler

    Backend users with access to the Recycler module were able to restore soft-deleted records on pages or for tables they were not authorized to modify. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0…

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-recycler Web / CMS Packagist
  • Medium 5.3
    CVE-2026-47350

    TYPO3 CMS - Broken Access Control in DataHandler

    Backend users were able to move records to a different page without having edit permissions on the source page. This issue affects TYPO3 CMS versions 13.0.0-13.4.30 and 14.0.0-14.3.2.

    TYPO3 TYPO3 CMS typo3/cms-core Web / CMS Packagist
  • Medium 5.3
    CVE-2026-47351

    TYPO3 CMS - Broken Access Control in Clipboard

    Backend users were able to insert arbitrary records and files into the TYPO3 clipboard without proper read permission checks, which allowed users to gather information about records and files they were not authorized to view. This issue affects TYPO3 CMS vers…

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-backend Web / CMS Packagist
  • Medium 5.3
    CVE-2026-47352

    TYPO3 CMS - Broken Access Control in Backend API

    Authenticated backend users were able to retrieve file metadata via several Backend API routes without proper permission checks, allowing access to files outside their permitted file mounts or storages. This issue affects TYPO3 CMS versions before 10.4.57, 11…

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-backend Web / CMS Packagist
  • Medium 5.1
    CVE-2026-47345

    TYPO3 HTML Sanitizer allows Cross-Site Scripting

    Namespace attributes are not encoded correctly during HTML serialization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.

    TYPO3 HTML Sanitizer typo3/html-sanitizer Packagist
  • Medium 5.1
    CVE-2026-47348

    TYPO3 CMS - Cross-Site Scripting in Indexed Search

    Editors with access to create or modify page content were able to include HTML markup in page titles that were stored in the search index without sanitization. When displayed in frontend search results via the Indexed Search plugin, these titles were rendered…

    TYPO3 TYPO3 CMS typo3/cms-core typo3/cms-indexed-search Web / CMS Packagist
  • Low 2.1
    CVE-2026-47344

    TYPO3 HTML Sanitizer allows Cross-Site Scripting

    When ALLOW_INSECURE_RAW_TEXT is enabled, whitespace-variant closing tags (e.g., </style\t>) are not recognized by the sanitizer but accepted by browsers as valid end tags, allowing subsequent content to escape sanitization. This allows bypassing the cross-sit…

    TYPO3 HTML Sanitizer typo3/html-sanitizer Packagist
  • Low 2.1
    CVE-2026-49738

    TYPO3 CMS - Broken Access Control in File Abstraction Layer

    The path allowance check in GeneralUtility::isAllowedAbsPath() performed a plain string prefix comparison without requiring a directory separator boundary, causing a path like /var/www/html-other/secret.yaml to be incorrectly accepted as valid when the projec…

    TYPO3 TYPO3 CMS typo3/cms-core Web / CMS Packagist

Revision history

  1. #2

    Referenz(en) aufgenommen: CVE-2026-47351, EUVD-2026-35398, EUVD-2026-35396, EUVD-2026-35395, EUVD-2026-35394, EUVD-2026-35393, EUVD-2026-35392, EUVD-2026-35391, EUVD-2026-35403, EUVD-2026-35402, EUVD-2026-35400, EUVD-2026-35399, EUVD-2026-35397, EUVD-2026-35401

  2. #1

    Initiale Fassung

References