CVE-2026-66666
Received Received - Intake

WordPress Information Disclosure via Embedded Data

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Patchstack

Description
Insertion of Sensitive Information Into Sent Data vulnerability in Automattic WordPress allows Retrieve Embedded Sensitive Data. This issue affects WordPress: from 7.1 through 7.1.2, from 7.0 through 7.0.6, from 6.9 through 6.9.9, from 6.8 through 6.8.10, from 6.7 through 6.7.9, and from 6.6 through 6.6.9.

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
CVE-2026-66666
EUVD
EUVD-2026-93555

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
Automattic WordPress 7.1
Automattic WordPress 7.0
Automattic WordPress 6.9
Automattic WordPress 6.8
Automattic WordPress 6.7
Automattic WordPress 6.6

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-201 The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

Attack-Flow Graph

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Executive Summary

This vulnerability involves sensitive information being embedded in data sent by WordPress. An attacker could retrieve this embedded sensitive data, potentially exposing confidential information.

Detection Guidance

Detection methods for this vulnerability are not specified in the provided CVE data. General approaches include inspecting WordPress plugins and themes for sensitive data exposure, monitoring network traffic for unusual data transmission, and reviewing WordPress core files for unauthorized modifications. Use tools like grep, Wireshark, or WordPress security plugins to scan for embedded sensitive information.

Impact Analysis

If exploited, this vulnerability could lead to unauthorized access to sensitive data, privacy breaches, or data leaks. Users of WordPress sites may face risks of compromised personal or business information.

Compliance Impact

This vulnerability could violate compliance requirements under GDPR or HIPAA by exposing protected personal or health data. Organizations may face legal penalties or reputational damage if sensitive data is leaked.

Mitigation Strategies

Update WordPress to the latest version (7.1.2 or later) to address the vulnerability. Review embedded sensitive data in WordPress posts and remove any exposed credentials or sensitive information.

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