CVE-2021-39203

Private data disclosure/privilege escalation through the block editor in 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.

References

Link	Tags
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-qxvw-qxm9-qvg6	third party advisory
https://hackerone.com/reports/1225282	permissions required

Frequently Asked Questions

What is the severity of CVE-2021-39203?: CVE-2021-39203 has been scored as a medium severity vulnerability.
How to fix CVE-2021-39203?: To fix CVE-2021-39203, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39203 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-39203 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39203?: CVE-2021-39203 affects WordPress wordpress-develop.

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Description

Category

CWE-200 – Exposure of Sensitive Information to an Unauthorized Actor

References

Frequently Asked Questions