CVE-2023-51639: Alltena Allegra

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloadExportedChart action. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-22361.

Affected products

• Alltena Allegra: before 7.5.1 (fixed in 7.5.1)

Published 2024-11-22. Last modified 2026-06-17.