CVE-2021-39200

Name: CVE-2021-39200
Creator: NVD / NIST
Published: 2021-09-09T22:15:09.34+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 2.05%

Last modified Jun 17, 2026

CVE-2021-39200 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions output data of the function wp_die() can be leaked under certain conditions, which can include data like nonces. EPSS estimates a 2.05% chance of exploitation in the next 30 days.

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 output data of the function wp_die() can be leaked under certain conditions, which can include data like nonces. It can then be used to perform actions on your behalf. This has been patched in WordPress 5.8.1, along with any older affected versions via minor releases. It's strongly recommended that you keep auto-updates enabled to receive the fix.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

2.05%

78.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Wordpress	Wordpress	>= 5.2, < 5.8.1
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-m9hc-7v5q-x8q5Third Party Advisory
https://hackerone.com/reports/1142140Permissions Required
https://www.debian.org/security/2021/dsa-4985Third Party Advisory
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-m9hc-7v5q-x8q5Third Party Advisory
https://hackerone.com/reports/1142140Permissions Required
https://www.debian.org/security/2021/dsa-4985Third Party Advisory

Timeline

Published: Sep 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39200?

How severe is CVE-2021-39200?

CVE-2021-39200 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.05% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39200?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39200?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST