What’s Vulnerable › Vulnerabilities

CVE-2023-51641: Allegra renderFieldMatch Deserialization of Unstrusted Data Remote Code Execution Vulnerability

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% 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-502

Description

Allegra renderFieldMatch Deserialization of Unstrusted Data 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, product implements a registration mechanism that can be used to create a user with a sufficient privilege level. The specific flaw exists within the renderFieldMatch method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22505.

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-24-106/

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