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= 7.1.2 - Unauthenticated Sensitive Data Exposure of Comments on Private and Unpublished Posts via Comment Feed vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-66666
StatePUBLISHED
AssignerPatchstack
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 18:16:55 UTC
Updated2026-10-06 21:17:20 UTC
DescriptionInsertion 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.

Risk And Classification

Primary CVSS: v4.0 6.9 MEDIUM from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-201 | CWE-201 CWE-201 Insertion of Sensitive Information Into Sent Data

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS6.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Automattic WordPress affected 7.1 7.1.2 custom Not specified
CNA Automattic WordPress affected 7.0 7.0.6 custom Not specified
CNA Automattic WordPress affected 6.9 6.9.9 custom Not specified
CNA Automattic WordPress affected 6.8 6.8.10 custom Not specified
CNA Automattic WordPress affected 6.7 6.7.9 custom Not specified
CNA Automattic WordPress affected 6.6 6.6.9 custom Not specified

References

ReferenceSourceLinkTags
patchstack.com/articles/wordpress-7-1-3-security-release [email protected] patchstack.com
patchstack.com/database/wordpress/wordpress/wordpress/vulnerability/wordpres... [email protected] patchstack.com
wordpress.org/news/2026/10/wordpress-7-1-3-maintenance-and-security-release [email protected] wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Ananda Dhakal | Patchstack (en)

Additional Advisory Data

Solutions

CNA: 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).

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