CVE-2021-29450Network attack vector

Contributor-level content disclosure via Latest Posts rendering

Published Apr 15, 2021 · Updated Aug 3, 2024

Information disclosure in the WordPress REST API before 5.7.1 allows remote authenticated users to read password-protected content. WP_REST_Posts_Controller disabled post password checks globally while rendering edit-context REST responses, letting a contributor-owned draft use the Latest Posts block to embed protected posts the contributor could not edit. Exploitation requires contributor privileges and discloses post content without granting modification or administrative access.

CVSS severity6.5
Medium
EPSS probability2.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in the WordPress REST API before 5.7.1 allows remote authenticated users to read password-protected content. WP_REST_Posts_Controller disabled post password checks globally while rendering edit-context REST responses, letting a contributor-owned draft use the Latest Posts block to embed protected posts the contributor could not edit. Exploitation requires contributor privileges and discloses post content without granting modification or administrative access.

The record

CVE
CVE-2021-29450
Published
Apr 15, 2021
Updated
Aug 3, 2024
Vendor
WordPress.org
Product
WordPress
Classifications
CWE-200
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.70,< 5.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WordPress.org · WordPressversion=>= 4.70,< 5.7.1

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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