---
id: CVE-2026-16957
title: >-
  The Slim SEO  WordPress plugin before 4.9.11 does not restrict a post-meta
  preview feature to posts the user is allowed to edit, verifying only read
  access, allowing users with the Contributor role to read arbitrary post meta,
  including …
summary: >-
  The Slim SEO  WordPress plugin before 4.9.11 does not restrict a post-meta
  preview feature to posts the user is allowed to edit, verifying only read
  access, allowing users with the Contributor role to read arbitrary post meta,
  including …
severity: none
published: '2026-08-09'
updated: '2026-08-09'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16957'
references:
  - url: 'https://wpscan.com/vulnerability/08e8c64b-50a4-4865-a33d-275644dcb850/'
    label: contact@wpscan.com
tags:
  - nvd
epss: 0.00299
epssPercentile: 0.20158
ingestedAt: '2026-08-09T15:33:37.809Z'
---

## Overview

The Slim SEO  WordPress plugin before 4.9.11 does not restrict a post-meta preview feature to posts the user is allowed to edit, verifying only read access, allowing users with the Contributor role to read arbitrary post meta, including protected and private keys, of published posts they do not own, including password-protected posts and posts of non-public post types.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.