CVE-2026-17166: Auth Bypass (CVSS 4.3)

Description

The Event Booking Manager for WooCommerce – Sell Tickets, Event Registration, RSVP & Event Calendar plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.3.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to modify site-wide payment settings — including WooCommerce payment enablement, cart redirect behavior, login requirements for checkout, confirmation page ID, and confirmed ticket statuses — that govern how all event bookings are processed.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0023

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://plugins.trac.wordpress.org/browser/mage-eventpress/tags/5.3.7/admin/settings/global/admin_setting_panel.php#L1080 https://plugins.trac.wordpress.org/browser/mage-eventpress/tags/5.3.7/admin/settings/global/admin_setting_panel.php#L1120 https://plugins.trac.wordpress.org/browser/mage-eventpress/tags/5.3.7/admin/settings/global/admin_setting_panel.php#L25 https://plugins.trac.wordpress.org/browser/mage-eventpress/trunk/admin/settings/global/admin_setting_panel.php#L1080 https://plugins.trac.wordpress.org/browser/mage-eventpress/trunk/admin/settings/global/admin_setting_panel.php#L1120 https://plugins.trac.wordpress.org/browser/mage-eventpress/trunk/admin/settings/global/admin_setting_panel.php#L25 https://plugins.trac.wordpress.org/changeset?reponame=&old=3625494%40mage-eventpress&new=3625494%40mage-eventpress https://www.wordfence.com/threat-intel/vulnerabilities/id/5f43e35e-55cd-45f1-b8a5-e47398d97cc2?source=cve

Frequently Asked Questions

What is CVE-2026-17166? +

The Event Booking Manager for WooCommerce – Sell Tickets, Event Registration, RSVP & Event Calendar plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.3.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to modify site-wide payment settings — including WooCommerce payment enablement, cart redirect behavior, login requirements for checkout, confirmation page ID, and confirmed ticket statuses — that govern how all event bookings are processed. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-17166? +

CVE-2026-17166 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0023, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-17166? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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