Information disclosure in WordPress
CVE-2021-39203
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions authenticated users who don't have permission to view private post types/data can bypass restrictions in the block editor under certain conditions. This affected WordPress 5.8 beta during the testing period. It's fixed in the final 5.8 release.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- WordPress — versions 5.8
- WordPress Wordpress-Develop — versions 5.8 beta 1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/WordPress/wordpress-develop/security/advisories/GHSA-qxvw-qxm9-qvg6 (Third Party Advisory)
- hackerone.com/reports/1225282 (Permissions Required)
Frequently asked questions
- What is CVE-2021-39203?
- CVE-2021-39203 is a medium-severity vulnerability in WordPress, classified under Information Disclosure. CVSS score: 6.8/10. Published 2021-09-09.
- How severe is CVE-2021-39203?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2021-39203 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.