WordPress core
CVE-2021-39203
WordPress 5.8 beta: Private data disclosure/privilege escalation through the block editor
- Severity
- Medium 6.5
- Published
- 9 Sept 2021
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 17 Oct 2026
- Also known as
- GHSA-qxvw-qxm9-qvg6
- Sources
- NVD, WordPress
Description
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.
Affected software
| Software | Affected versions |
|---|---|
WordPressWordPress core · cpe:a:wordpress:wordpress |
|
References
- NVD https://nvd.nist.gov/vuln/detail/CVE-2021-39203
- CVE.org https://www.cve.org/CVERecord?id=CVE-2021-39203
- GitHub Advisory Database https://github.com/advisories/GHSA-qxvw-qxm9-qvg6
- WordPress security advisory https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-qxvw-qxm9-qvg6