Is CVE-2021-24288 actively exploited?

No active exploitation of CVE-2021-24288 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-24288 be exploited remotely?

Yes. CVE-2021-24288 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-24288?

CVE-2021-24288 has a CVSS score of 6.1 (MEDIUM).

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MEDIUM

CVE-2021-24288

CWE-601Published: May 17, 2021· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

When subscribing using AcyMailing, the 'redirect' parameter isn't properly sanitized. Turning the request from POST to GET, an attacker can craft a link containing a potentially malicious landing page and send it to the victim.

NVD Source

Technical Analysis

CVE-2021-24288 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.