Is CVE-2017-20033 actively exploited?

No active exploitation of CVE-2017-20033 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-20033 be exploited remotely?

Yes. CVE-2017-20033 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-20033?

CVE-2017-20033 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2017-20033

MEDIUM

CVE-2017-20033

CWE-80Published: June 10, 2022· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

A vulnerability classified as problematic has been found in PHPList 3.2.6. This affects an unknown part of the file /lists/admin/. The manipulation of the argument page with the input send\'\";><script>alert(8)</script> leads to cross site scripting (Reflected). It is possible to initiate the attack remotely. Upgrading to version 3.3.1 is able to address this issue. It is recommended to upgrade the affected component.

NVD Source

Technical Analysis

CVE-2017-20033 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.