What’s Vulnerable › Vulnerabilities

CVE-2023-51645: Allegra unzipFile Directory Traversal Remote Code Execution Vulnerability

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-22 · updated 2026-06-17
• Weakness: CWE-22

Description

Allegra unzipFile Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the unzipFile method. 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 execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22513.

Affected products

• Allegra: before 7.5.1 — fixed in 7.5.1

How to fix

Upgrade to a fixed version: Allegra 7.5.1. Check the vendor advisory for mitigations.

References

• https://www.trackplus.com/en/service/release-notes-reader/7-5-1-release-notes-2.html
• https://www.zerodayinitiative.com/advisories/ZDI-24-101/

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