CVE-2026-66666

WordPress Core <= 7.1.2 - Unauthenticated Sensitive Data Exposure of Comments on Private and Unpublished Posts via Comment Feed vulnerability

Published Oct 6, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Update the WordPress WordPress wordpress to the latest available version (at least 7.1.3, 7.0.7, 6.9.10, 6.8.11, 6.7.10, 6.6.10).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description Insertion of Sensitive Information Into Sent Data vulnerability in Automattic WordPress wordpress allows Retrieve Embedded Sensitive Data.This issue affects WordPress: from n/a through 7.1.2. 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.
First Time appeared Automattic
Automattic wordpress
CPEs cpe:2.3:a:automattic:wordpress:*:*:*:*:*:*:*:*
Vendors & Products Automattic
Automattic wordpress
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Insertion of Sensitive Information Into Sent Data vulnerability in Automattic WordPress wordpress allows Retrieve Embedded Sensitive Data.This issue affects WordPress: from n/a through 7.1.2.
Title WordPress Core <= 7.1.2 - Unauthenticated Sensitive Data Exposure of Comments on Private and Unpublished Posts via Comment Feed vulnerability
Weaknesses CWE-201
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Oct 6, 2026, 8:05 PM
Reserved
Jul 27, 2026, 2:00 PM
Status
Deferred
Published
Oct 6, 2026, 6:16 PM
Modified
Oct 6, 2026, 9:17 PM