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CVE-2026-66666— WordPress Core <= 7.1.2 - Unauthenticated Sensitive Data Exposure of Comments on Private and Unpublished Posts via Comment Feed vulnerability

Quick assessment

Affected
Automattic WordPress
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Automattic WordPress 中存在“将敏感信息插入到发送数据中”的漏洞，攻击者可利用该漏洞检索嵌入的敏感数据。该漏洞影响 WordPress 从最初版本（n/a）到 7.1.2 版本。

CVSS 6.9 · Medium

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 6

VendorProduct Version RangeStatus
Automattic WordPress 7.1≤ 7.1.2 affected
7.0≤ 7.0.6 affected
6.9≤ 6.9.9 affected
6.8≤ 6.8.10 affected
6.7≤ 6.7.9 affected
6.6≤ 6.6.9 affected
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I. Basic Information for CVE-2026-66666

Vulnerability Information
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Vulnerability Title
WordPress Core <= 7.1.2 - Unauthenticated Sensitive Data Exposure of Comments on Private and Unpublished Posts via Comment Feed vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过发送数据的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Automattic WordPress 7.1 ~ 7.1.2 -

II. Public POCs for CVE-2026-66666

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III. Intelligence Information for CVE-2026-66666

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Patches & Fixes for CVE-2026-66666 (1)

Vendor Advisories for CVE-2026-66666 (1)

Other References for CVE-2026-66666 (1)

IV. Related Vulnerabilities

Same product: WordPress
Same vendor: Automattic
Same weakness: CWE-201

V. Comments for CVE-2026-66666

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