Is CVE-2020-26227 actively exploited?

No active exploitation of CVE-2020-26227 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-26227 be exploited remotely?

Yes. CVE-2020-26227 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-26227?

CVE-2020-26227 has a CVSS score of 6.1 (MEDIUM).

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MEDIUM

CVE-2020-26227

CWE-79Published: November 23, 2020· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 the system extension Fluid (typo3/cms-fluid) of the TYPO3 core is vulnerable to cross-site scripting passing user-controlled data as argument to Fluid view helpers. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.

NVD Source

Technical Analysis

CVE-2020-26227 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.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.