TYPO3 Extension: Unauth Club Record Overwrite via Missing Ownership Check
CVE-2026-77141 Published on August 25, 2026

Broken Access Control in extension "Club Directory" (clubdirectory)
The extension resolves the targeted club record from a user-supplied request argument in its frontend edit, update, and activate actions, but performs no ownership check in any of them. An unauthenticated visitor who knows the UID of a club record can send a direct request to the update or activate action and overwrite that record, or publish one still awaiting approval, without owning it.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-77141 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE

Weakness Types

What is an AuthZ Vulnerability?

The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

CVE-2026-77141 has been classified to as an AuthZ vulnerability or weakness.

What is an Insecure Direct Object Reference / IDOR Vulnerability?

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

CVE-2026-77141 has been classified to as an Insecure Direct Object Reference / IDOR vulnerability or weakness.


Affected Versions

TYPO3 Extension "Club Directory":