CVE-2023-51639 Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability
Remote attackers can bypass authentication and read arbitrary files via directory traversal in the downloadExportedChart action.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-51639?
CVE-2023-51639 is a critical path traversal vulnerability in Allegra, published on 22 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2023-51639?
It affects 1 product.
Products include Alltena Allegra.
How do I fix CVE-2023-51639?
No fix has been published for CVE-2023-51639 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2023-51639 being exploited?
There is no known exploitation of CVE-2023-51639 in the wild and no public exploit code.
Other vulnerabilities in Allegra
- CVE-2025-6216 Allegra calculateTokenExpDate Password Recovery Authentication Bypass Vulnerability
- CVE-2023-51638 Allegra Hard-coded Credentials Authentication Bypass Vulnerability
- CVE-2023-51641 Allegra renderFieldMatch Deserialization of Unstrusted Data Remote Code Execution Vulnerability
- CVE-2023-51642 Allegra loadFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability
- CVE-2023-51644 Allegra SiteConfigAction Improper Access Control Remote Code Execution Vulnerability
Sources
Also known as GHSA-g8p3-q878-476h.