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WordPress wordpress core

WordPress Core 5.4 — 5.8 - Sensitive Information Disclosure

CVE-2021-39200Published · Updated

Action summary

Affected: <5.8.1Update to 5.4.7 or 5.5.6 or 5.6.5 or 5.7.3 or 5.8.1 or newer

Fixed versions are per release branch: update to the fix for the branch you run.

All remediation steps
Watch core
Medium5.3CVSS 3.15.3CISA KEVNot listedAccessUnknown
On this page3

Overview

Advisory ID
CVE-2021-39200
Product
WordPress wordpress
Affected
<5.8.1
Fixed in
5.4.7, 5.5.6, 5.6.5, 5.7.3, 5.8.1
Required access
Unknown
Published
· updated
Credit
@mdawaffe
  1. Affected< 5.8.1
  2. Patched in5.4.7 / 5.5.6 / 5.6.5 / 5.7.3 / 5.8.1

Update to 5.4.7 / 5.5.6 / 5.6.5 / 5.7.3 / 5.8.1 or newer.

5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:H Attack complexity
High
PR:L Privileges required
Low
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:N Integrity
None
A:N Availability
None

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.

Not sure which version you run? Run a passive check — it reads public files only.

Remediation & mitigations

  1. 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
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.

References & provenance

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

Related CVEs

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Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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