Is CVE-2016-20070 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2016-20070 being exploited in the wild.

How severe is CVE-2016-20070?

Medium severity, with a CVSS score of 6.4, published 15 June 2026.

Which products and versions are affected?

CodePeople Booking Calendar Contact Form <= 1.0.23.

Is there a fix for CVE-2016-20070?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2016-20070 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2016-20070?

Check whether you run CodePeople Booking Calendar Contact Form at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2016-20070: CodePeople Booking Calendar Contact Form privilege escalation and stored XSS

Q: Is there a fix for CVE-2016-20070?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2016-20070 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2016-20070?

Check whether you run CodePeople Booking Calendar Contact Form at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2016-20070 · Severity: medium · CVSS 6.4 · Published 2026-06-15

A vulnerability in the Booking Calendar Contact Form plugin for WordPress allows low-level users to gain unauthorized control over plugin settings. This flaw enables attackers to modify configuration options and inject malicious scripts into the website. If an administrator views the affected pages, the attacker could potentially hijack their session or perform actions on their behalf, compromising the site's security and visitor data.

Technologies: CodePeople Booking Calendar Contact Form. Vendors: CodePeople.

Quick answers

Is CVE-2016-20070 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2016-20070 being exploited in the wild.
How severe is CVE-2016-20070?: Medium severity, with a CVSS score of 6.4, published 15 June 2026.
Which products and versions are affected?: CodePeople Booking Calendar Contact Form <= 1.0.23.
Is there a fix for CVE-2016-20070?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2016-20070 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2016-20070?: Check whether you run CodePeople Booking Calendar Contact Form at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Booking Calendar Contact Form plugin for WordPress (up to version 1.0.23) fails to perform adequate capability checks and input sanitization on several administrative functions. Authenticated attackers, including those with low-level 'Subscriber' roles, can exploit these flaws via the admin-ajax.php and admin.php endpoints. By manipulating parameters such as 'price', 'name', 'calendar_language', and 'email_confirmation_to_user', an attacker can modify plugin settings or store malicious JavaScript. This script executes in the context of any user (including administrators) who views the modified plugin settings or affected front-end pages, leading to stored Cross-Site Scripting (XSS). Additionally, the plugin was found to be vulnerable to unauthenticated blind SQL injection in the 'id' parameter of the 'dex_bccf_calendar_ajaxevent' action.

Affected products

CodePeople (DWBooster) Booking Calendar Contact Form <= 1.0.23

Timeline

2016-02-08: disclosed: Initial discovery and exploit published by i0 SEC-LABORATORY
2026-06-15: advisory: CVE-2016-20070 published/updated in NVD dataset

References

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