CVE-2022-1604: MailerLite < 1.5.4 - Reflected Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-06-13 · updated 2026-06-17
Weakness: CWE-79

Description

The MailerLite WordPress plugin before 1.5.4 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting

Affected products

MailerLite (WordPress plugin): before 1.5.4 — fixed in 1.5.4

How to fix

Upgrade to a fixed version: MailerLite (WordPress plugin) 1.5.4. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/557c1c49-7195-4085-b67a-9fd8aca57845
https://wpscan.com/vulnerability/557c1c49-7195-4085-b67a-9fd8aca57845

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