CVE-2023-51639: critical vulnerability in Allegra
Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 2.5%
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Allegra · AllegraRelated CVEs — Allegra
In the same product, most dangerous first.
CVE-2025-6216CRITICALAllegra calculateTokenExpDate Password Recovery Authentication Bypass VulnerabilityEPSS 47.8%CVE-2024-5581HIGHAllegra unzipFile Directory Traversal Remote Code Execution VulnerabilityEPSS 2.4%CVE-2023-51647HIGHAllegra saveInlineEdit Directory Traversal Remote Code Execution VulnerabilityEPSS 2.2%CVE-2023-51643HIGHAllegra uploadFile Directory Traversal Remote Code Execution VulnerabilityEPSS 2.2%CVE-2023-52332HIGHAllegra serveMathJaxLibraries Directory Traversal Information Disclosure VulnerabilityEPSS 2.1%CVE-2023-51644CRITICALAllegra SiteConfigAction Improper Access Control Remote Code Execution VulnerabilityEPSS 2.0%