CVE-2020-11516

Name: CVE-2020-11516
Creator: NVD / NIST
Published: 2020-04-07T17:15:14.027+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2020-11516 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Stored XSS in the Contact Form 7 Datepicker plugin through 2.6.0 for WordPress allows authenticated attackers with minimal permissions to save arbitrary JavaScript to the plugin's settings via the unprotected wp_ajax_cf7dp_save_settings AJAX action and the ui_theme parameter. If an administrator creates or modifies a contact form, the JavaScript will be executed in their browser, which can then be used to create new administrative users or perform other actions using the administrator's session.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

Stored XSS in the Contact Form 7 Datepicker plugin through 2.6.0 for WordPress allows authenticated attackers with minimal permissions to save arbitrary JavaScript to the plugin's settings via the unprotected wp_ajax_cf7dp_save_settings AJAX action and the ui_theme parameter. If an administrator creates or modifies a contact form, the JavaScript will be executed in their browser, which can then be used to create new administrative users or perform other actions using the administrator's session.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.71%

48.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Contact-Form-7-Datepicker Project	Contact-Form-7-Datepicker	<= 2.6.0

References

https://www.wordfence.com/blog/2020/04/high-severity-vulnerability-leads-to-closure-of-plugin-with-over-100000-installations/Exploit, Third Party Advisory
https://www.wordfence.com/blog/2020/04/high-severity-vulnerability-leads-to-closure-of-plugin-with-over-100000-installations/Exploit, Third Party Advisory

Timeline

Published: Apr 7, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11516?

How severe is CVE-2020-11516?

CVE-2020-11516 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11516?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11516?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST