Auth bypass in Wpcoursesplugin Wp-Courses
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).
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.106 (95.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.106 · newest: 0.106 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.redtimmy.com/critical-information-disclosure-on-wp-courses-plugin-exposes-p… (Exploit, Third Party Advisory)
- plugins.trac.wordpress.org/changeset/2389243 (Third Party Advisory)
- plugins.trac.wordpress.org/changeset/2388997 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26876?
- CVE-2020-26876 is a high-severity vulnerability in Wpcoursesplugin Wp-Courses, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2020-10-07.
- How severe is CVE-2020-26876?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-26876 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.