CVE-2023-51642: Allegra loadFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability

Q: How do I fix CVE-2023-51642?

allegra: upgrade to 7.5.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-51642 being exploited?

CVE-2023-51642 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-51642 affect?

CVE-2023-51642 affects allegra. Severity is medium (CVSS 6.3). Allegra loadFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to

Q: How urgent is CVE-2023-51642?

Priority 40/100. No elevated risk signals yet.

This month

MEDIUM 6.3UPGRADE

CVE-2023-51642 is a medium-severity flaw (CVSS 6.3) affecting allegra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Allegra loadFieldMatch Deserialization of Untrusted 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 loadFieldMatch method. The issue

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-502
Published	2024-11-22
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: alltena

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-22 20:15 UTCPublished CVE record published
2026-06-17 06:41 UTCUpdated Record last modified

alltena allegra UPGRADE

Affected: < 7.5.1

Fixed in: 7.5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy allegra || rpm -q allegra || allegra --version

2. UPGRADE to 7.5.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade allegra

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade allegra

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-51642?

allegra: upgrade to 7.5.1. Exact commands for each OS are on this page.

Is CVE-2023-51642 being exploited?

CVE-2023-51642 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-51642 affect?

CVE-2023-51642 affects allegra. Severity is medium (CVSS 6.3). Allegra loadFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to

How urgent is CVE-2023-51642?

Priority 40/100. No elevated risk signals yet.

Related CVEs

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CVE-2025-3485 HIGH 8.8 UPGRADE Allegra extractFileFromZip Directory Traversal Remote Code Execution Vulnerability
CVE-2024-5581 HIGH 7.2 UPGRADE Allegra unzipFile Directory Traversal Remote Code Execution Vulnerability
CVE-2024-5580 HIGH 7.2 UPGRADE Allegra loadFieldMatch Deserialization of Untrusted Data Remote Code Execution Vulnerability

References

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