WordPress Core 5.4 - 5.8 - Sensitive Information Disclosure

5.3
Exposure of Sensitive Information to an Unauthorized Actor
CVE CVE-2021-39200
CVSS 5.3 (Medium)
Publicly Published September 9, 2021
Last Updated July 8, 2022
Researcher @mdawaffe

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.

References

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Vulnerability Details for WordPress

Software Type Core
Patched? Yes
Remediation Update to one of the following versions, or a newer patched version: 5.4.7, 5.5.6, 5.6.5, 5.7.3, 5.8.1
Affected Versions
  • 5.4 - 5.4.7 (exclusive)
  • 5.5 - 5.5.6 (exclusive)
  • 5.6 - 5.6.5 (exclusive)
  • 5.7 - 5.7.3 (exclusive)
Expand to see 1 more affected version range.
  • 5.8 - 5.8.1 (exclusive)
Patched Versions
  • 5.4.7
  • 5.5.6
  • 5.6.5
  • 5.7.3
Expand to see 1 more patched version.
  • 5.8.1

Recent vulnerabilities in WordPress

# Title CVE ID CVSS Researchers Date
1 WordPress Core <= 7.0.3 - Authenticated (Author+) Remote Code Execution via Malicious File Upload CVE-2026-65640 8.8 pwn.ai Team August 12, 2026
2 WordPress Core <= 7.0.2 - Authenticated (Author+) CSS Injection 5.5 August 8, 2026
3 WordPress Core <= 7.0.2 - Unauthenticated Sensitive Information Exposure via Comment Feeds 5.3 Elio Gubser (odkdn1) August 8, 2026
4 WordPress Core <= 7.0.2 - Unauthenticated Blind Server-Side Request Forgery 5.8 Andrew MacPherson August 8, 2026
5 WordPress Core <= 7.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Quick Edit 4.9 moochi, mappymappy August 8, 2026
6 WordPress Core <= 7.0.2 - Authenticated (Subscriber+) Email Change Confirmation Bypass 4.3 0ways August 8, 2026
7 WordPress Core <= 7.0.2 - Unauthenticated Reflected Cross-Site Scripting via log Parameter CVE-2026-64638 6.1 pwn.ai Team August 8, 2026
8 WordPress Core <= 7.0.2 - Authenticated (Subscriber+) Missing Authorization to Arbitrary Site Creation on Multisite 4.3 Aikido Security August 8, 2026
9 WordPress Core <= 7.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Emoji Settings Element 6.4 Asaf Mozes August 8, 2026
10 WordPress Core 6.9 - 7.0.1 - Remote Code Execution via REST API Batch Request Route Confusion CVE-2026-63030 9.8 Adam Kues July 17, 2026

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