CVE-2026-49738
TYPO3 CMS - Broken Access Control in File Abstraction Layer
Description
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 project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. 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 14.0.0-14.3.2.
INFO
Published Date :
June 9, 2026, 11:16 a.m.
Last Modified :
July 23, 2026, 8:10 a.m.
Remotely Exploit :
Yes !
Source :
f4fb688c-4412-4426-b4b8-421ecf27b14a
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | LOW | f4fb688c-4412-4426-b4b8-421ecf27b14a | ||||
| CVSS 4.0 | LOW | f4fb688c-4412-4426-b4b8-421ecf27b14a |
Solution
- Update TYPO3 CMS to a version 10.4.57 or later.
- Update TYPO3 CMS to a version 11.5.51 or later.
- Update TYPO3 CMS to a version 12.4.46 or later.
- Update TYPO3 CMS to a version 13.4.31 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-49738.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-49738 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-49738
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-49738 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-49738 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: TYPO3 CMS de TYPO3, Description: La comprobación de permiso de ruta en GeneralUtility::isAllowedAbsPath() realizó una comparación de prefijo de cadena simple sin requerir un límite de separador de directorio, lo que provocó que una ruta como /var/www/html-other/secret.yaml fuera aceptada incorrectamente como válida cuando la raíz del proyecto era /var/www/html. Los usuarios administradores con acceso a la Capa de Abstracción de Archivos pudieron crear nuevas definiciones de almacenamiento de archivos apuntando a directorios fuera de la raíz del proyecto, eludiendo esta comprobación de ruta. Este problema afecta a las versiones de TYPO3 CMS anteriores a 10.4.57, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 y 14.0.0-14.3.3. -
CVE Modified by f4fb688c-4412-4426-b4b8-421ecf27b14a
Jul. 15, 2026
Action Type Old Value New Value Changed Description 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 project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 and 14.0.0-14.3.3. 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 project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. 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 14.0.0-14.3.2. -
CVE Modified by f4fb688c-4412-4426-b4b8-421ecf27b14a
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/TYPO3/typo3', 'vendor': 'TYPO3', 'modules': ['Core'], 'product': 'TYPO3 CMS', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '10.4.57', 'versionType': 'semver'}, {'status': 'affected', 'version': '11.0.0', 'lessThan': '11.5.51', 'versionType': 'semver'}, {'status': 'affected', 'version': '12.0.0', 'lessThan': '12.4.46', 'versionType': 'semver'}, {'status': 'affected', 'version': '13.0.0', 'lessThan': '13.4.31', 'versionType': 'semver'}, {'status': 'affected', 'version': '14.0.0', 'lessThan': '14.3.3', 'versionType': 'semver'}], 'packageName': 'typo3/cms-core', 'collectionURL': 'https://packagist.org', 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-49738', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-09T13:42:59.723468Z'} -
New CVE Received by f4fb688c-4412-4426-b4b8-421ecf27b14a
Jun. 09, 2026
Action Type Old Value New Value Added Description 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 project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 and 14.0.0-14.3.3. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-22 Added Reference https://github.com/TYPO3/typo3/commit/150a983a5d687cedcfc33bbe9c335d9a13fd05e5 Added Reference https://github.com/TYPO3/typo3/commit/44c2fa9807944136218a0842e3051c0a379a002d Added Reference https://typo3.org/security/advisory/typo3-core-sa-2026-016