Allegra getFileContentAsString Directory Traversal Information Disclosure Vulnerability

Successful exploitation of CVE-2023-51648 allows an attacker to read arbitrary files on the server hosting Allegra. Because authentication is required, an attacker must first create a user with sufficient privileges, which is facilitated by Allegra's registration mechanism. The potential data exposure includes configuration files, source code, and other sensitive data that could reveal system architecture, credentials, or proprietary information. This vulnerability presents a significant risk of data breach and potential compromise of the entire system.

Organizations deploying Allegra, particularly those with custom integrations or extensions that rely on file access, are at risk. Shared hosting environments where multiple users share the same Allegra instance are also particularly vulnerable, as a compromised user account could be leveraged to exploit this flaw.

1. 2024-11-22Disclosure

   disclosure

1. Reserviert2023-12-20
2. Veröffentlicht2024-11-22
3. Geändert2024-11-25
4. EPSS aktualisiert2026-04-02

The primary mitigation for CVE-2023-51648 is to upgrade Allegra to version 7.5.1 or later, which includes the necessary fix. If upgrading immediately is not feasible, consider implementing stricter file access controls on the server hosting Allegra to limit the attacker's ability to access sensitive files. Web application firewalls (WAFs) configured to block requests containing suspicious file path characters (e.g., ../) can provide an additional layer of defense. Thoroughly review Allegra's configuration to ensure that user privileges are appropriately restricted.