CVE-2020-26876

The wp-courses plugin through 2.0.27 for WordPress allows remote attackers to bypass the intended payment step (for course videos and materials) by using the /wp-json REST API, as exploited in the wild in September 2020. This occurs because show_in_rest is enabled for custom post types (e.g., /wp-json/wp/v2/course and /wp-json/wp/v2/lesson exist).

• CWE-306

• https://plugins.trac.wordpress.org/changeset/2388997Third Party Advisory
• https://plugins.trac.wordpress.org/changeset/2389243Third Party Advisory
• https://www.redtimmy.com/critical-information-disclosure-on-wp-courses-plugin-exposes-private-course-videos-and-materials/Exploit, Third Party Advisory
• https://plugins.trac.wordpress.org/changeset/2388997Third Party Advisory
• https://plugins.trac.wordpress.org/changeset/2389243Third Party Advisory
• https://www.redtimmy.com/critical-information-disclosure-on-wp-courses-plugin-exposes-private-course-videos-and-materials/Exploit, Third Party Advisory

Published

Oct 7, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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