Vulnerability · Published Aug 9, 2026 · Assigned by WPScan

CVE-2026-16957Slim SEO < 4.9.11 - Contributor+ Arbitrary Post Meta Disclosure

Low 2.7

In plain English

A low-severity authorization bypass via user-controlled key in Slim SEO from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.1)2.7Low

Exploit odds (30 days)0.3%top 77.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Slim SEO	0 – before 4.9.11

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

References

https://wpscan.com/vulnerability/08e8c64b-50a4-4865-a33d-275644dcb850/ exploit, vdb-entry, technical-description