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.
Published: 2026-10-06
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: Sensitive data exposure of comments on private and unpublished posts
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is an insertion of sensitive information into data sent from WordPress, allowing an attacker to retrieve embedded sensitive data from comments on private or unpublished posts. The flaw is a typical information‑exposure weakness (CWE‑201) that compromises confidentiality. The flaw can be exercised without authentication by requesting the comment feed URL. Because the feed is publicly reachable, anyone who can generate a request can see the data that belongs on a private or unpublished post, exposing potentially confidential user or site information. The CVSS score is 6.9, indicating moderate severity. No EPSS score is currently available, and the issue is not listed in the CISA KEV catalog. However, the lack of authentication requirements makes it straightforward to exploit once a vulnerable installation is identified. Organizations running unpatched WordPress Core versions should treat this as a real risk.

Affected Systems

WordPress Core by Automattic from any version up to and including 7.1.2 is vulnerable. The fix is provided in WordPress Core 7.1.3 and later. All deployments of WordPress Core versions 7.1.2 or older are affected and should be updated.

Risk and Exploitability

The vulnerability has a CVSS score of 6.9, which classifies it as moderate. EPSS data is not available, so the exploitation likelihood cannot be quantified, but the flaw exposes data through a publicly reachable endpoint, enabling straightforward unauthenticated data theft. The attack requires no special credentials or elevated privileges; simply accessing the comment feed URL on a vulnerable site is sufficient to extract the protected content.

Generated by OpenCVE AI on October 6, 2026 at 19:49 UTC.

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).


OpenCVE Recommended Actions

  • Update WordPress Core to version 7.1.3 or later.
  • Disable the comment feed or restrict its access for private and unpublished posts, either through configuration or a security plugin.
  • Review any custom code or plugins that expose comment data and remove or update them.

Generated by OpenCVE AI on October 6, 2026 at 19:49 UTC.

Tracking

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Advisories

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History

Tue, 06 Oct 2026 20:30:00 +0000

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

Tue, 06 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 06 Oct 2026 18:00:00 +0000

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'}


Subscriptions

Automattic Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Patchstack

Published:

Updated: 2026-10-06T20:05:54.337Z

Reserved: 2026-07-27T14:00:48.793Z

Link: CVE-2026-66666

cve-icon Vulnrichment

Updated: 2026-10-06T18:21:35.463Z

cve-icon NVD

Status : Deferred

Published: 2026-10-06T18:16:55.810

Modified: 2026-10-06T19:56:02.200

Link: CVE-2026-66666

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T20:00:06Z

Weaknesses
  • CWE-201

    Insertion of Sensitive Information Into Sent Data