Is CVE-2022-21648 actively exploited?

No active exploitation of CVE-2022-21648 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-21648 be exploited remotely?

Yes. CVE-2022-21648 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-21648?

CVE-2022-21648 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2022-21648

MEDIUM

CVE-2022-21648

CWE-79Published: January 4, 2022· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

Latte is an open source template engine for PHP. Versions since 2.8.0 Latte has included a template sandbox and in affected versions it has been found that a sandbox escape exists allowing for injection into web pages generated from Latte. This may lead to XSS attacks. The issue is fixed in the versions 2.8.8, 2.9.6 and 2.10.8. Users unable to upgrade should not accept template input from untrusted sources.

NVD Source

Technical Analysis

CVE-2022-21648 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.