How severe is CVE-2020-11516?

CVE-2020-11516 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-11516 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11516?

CVE-2020-11516 affects Contact-form-7-datepicker Project Contact-form-7-datepicker. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11516?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-11516 published?

CVE-2020-11516 was published on 2020-04-07 and last updated on 2026-06-17.

CVE-2020-11516

CVE-2020-11516 is a medium-severity vulnerability in Contact-form-7-datepicker Project Contact-form-7-datepicker with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Contact-form-7-datepicker Project Contact-form-7-datepicker
Published: 2020-04-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-11516?: 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.
How severe is CVE-2020-11516?: CVE-2020-11516 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-11516 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11516?: CVE-2020-11516 affects Contact-form-7-datepicker Project Contact-form-7-datepicker. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11516?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-11516 published?: CVE-2020-11516 was published on 2020-04-07 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:contact-form-7-datepicker_project:contact-form-7-datepicker:*:*:*:*:*:wordpress:*:*

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