CVE-2026-16957

Slim SEO < 4.9.11 - Contributor+ Arbitrary Post Meta Disclosure

Published Aug 9, 2026 CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
Description
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

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions slim Seo
Vendors & Products Wordpress-extensions
Wordpress-extensions slim Seo
Type Values Removed Values Added
Weaknesses CWE-639
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Slim SEO < 4.9.11 - Contributor+ Arbitrary Post Meta Disclosure
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Aug 11, 2026, 7:42 PM
Reserved
Jul 24, 2026, 8:11 AM
Status
Deferred
Published
Aug 9, 2026, 6:17 AM
Modified
Aug 26, 2026, 4:31 PM