Is CVE-2020-26048 actively exploited?

No active exploitation of CVE-2020-26048 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-26048 be exploited remotely?

Yes. CVE-2020-26048 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-26048?

CVE-2020-26048 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2020-26048

CWE-434Published: October 5, 2020· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

The file manager option in CuppaCMS before 2019-11-12 allows an authenticated attacker to upload a malicious file within an image extension and through a custom request using the rename function provided by the file manager is able to modify the image extension into PHP resulting in remote arbitrary code execution.

NVD Source

Technical Analysis

CVE-2020-26048 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.