What’s Vulnerable › Vulnerabilities

CVE-2020-26876

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-10-07 · updated 2026-06-17
• Weakness: CWE-306

Description

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).

Affected products

• Wpcoursesplugin Wp-Courses: through 2.0.27

References

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

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