CVE-2021-24168: Easy Contact Form Pro < 1.1.1.9 - Authenticated Stored Cross-Site Scripting (XSS)

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-04-05 · updated 2026-06-17
Weakness: CWE-79

Description

The Easy Contact Form Pro WordPress plugin before 1.1.1.9 did not properly sanitise the text fields (such as Email Subject, Email Recipient, etc) when creating or editing a form, leading to an authenticated (author+) stored cross-site scripting issue. This could allow medium privilege accounts (such as author and editor) to perform XSS attacks against high privilege ones like administrator.

Affected products

Easy Contact Form Pro: before 1.1.1.9 — fixed in 1.1.1.9

How to fix

Upgrade to a fixed version: Easy Contact Form Pro 1.1.1.9. Check the vendor advisory for mitigations.

References

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