How severe is CVE-2023-51645?

CVE-2023-51645 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-51645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51645?

CVE-2023-51645 affects Alltena Allegra. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51645?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-51645 have an EU (EUVD) identifier?

Yes. CVE-2023-51645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56357.

When was CVE-2023-51645 published?

CVE-2023-51645 was published on 2024-11-22 and last updated on 2026-06-17.

CVE-2023-51645

CVE-2023-51645 is a medium-severity vulnerability in Alltena Allegra with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56357
Weakness: CWE-22
Affected product: Alltena Allegra
Published: 2024-11-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-51645?: 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.
How severe is CVE-2023-51645?: CVE-2023-51645 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-51645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51645?: CVE-2023-51645 affects Alltena Allegra. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51645?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-51645 have an EU (EUVD) identifier?: Yes. CVE-2023-51645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56357.
When was CVE-2023-51645 published?: CVE-2023-51645 was published on 2024-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:alltena:allegra:*:*:*:*:*:*:*:*

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