CVE-2023-51639
Alltena Allegra authentication bypass
- Published22 Nov 2024
Description
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.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
Remediation
Frequently asked
Is CVE-2023-51639 being actively exploited?
CVE-2023-51639 is not in the CISA KEV catalog. Its EPSS exploit probability is 2.49%.
How severe is CVE-2023-51639?
CVE-2023-51639 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.49% probability of exploitation.
Which products are affected by CVE-2023-51639?
Affected products include Alltena Allegra.
How do I fix CVE-2023-51639?
Upgrade affected software to a fixed version, for example Alltena Allegra 7.5.1 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2023-51639 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.