CVE-2023-51639

Name: CVE-2023-51639
Creator: NVD / NIST
Published: 2024-11-22T20:15:06.4+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.40%

Last modified Jun 17, 2026

CVE-2023-51639 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. EPSS estimates a 2.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.40%

81.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Alltena	Allegra	< 7.5.1

References

https://www.trackplus.com/en/service/release-notes-reader/7-5-1-release-notes-2.htmlRelease Notes
https://www.zerodayinitiative.com/advisories/ZDI-24-110/Third Party Advisory

Timeline

Published: Nov 22, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-51639?

How severe is CVE-2023-51639?

CVE-2023-51639 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.

How do I fix CVE-2023-51639?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-51639?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST