Slim SEO <= 4.9.8 - Authenticated (Contributor+) Insufficient Authorization to Private Content Disclosure via 'object.ID' Parameter
Summary
| CVE | CVE-2026-12408 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-01 08:16:20 UTC |
| Updated | 2026-07-01 13:56:17 UTC |
| Description | The Slim SEO – A Fast & Automated SEO Plugin For WordPress plugin for WordPress is vulnerable to Unauthorized Private Content Disclosure in all versions up to, and including, 4.9.8 via the `/wp-json/slim-seo/meta-tags/ai` REST API endpoint. This is due to the endpoint's `permission_callback` performing only a top-level `edit_posts` capability check without verifying that the requesting user has read access to the specific post supplied via the `object.ID` parameter, allowing the `generate` function to pass the attacker-controlled post ID to `Data::get_post_content()`, which calls `get_post()` regardless of post status or ownership. This makes it possible for authenticated attackers with Contributor-level access and above to retrieve AI-generated summaries of the raw `post_content` of arbitrary posts they are not authorized to view — including private posts, drafts, pending, future, and password-protected content authored by other users — with the substance of the protected content disclosed via the HTTP response. |
Risk And Classification
Primary CVSS: v3.1 4.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS: 0.002570000 probability, percentile 0.170380000 (date 2026-07-04)
Problem Types: CWE-200 | CWE-200 CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| 3.1 | CNA | DECLARED | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
LowIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Rilwis | Slim SEO A Fast Automated SEO Plugin For WordPress | affected 4.9.8 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.wordfence.com/threat-intel/vulnerabilities/id/6e6603a0-8f35-49fb-a517-ba634... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.5/src/MetaTags/AI.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.5/src/MetaTags/Data.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.8/src/MetaTags/AI.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.8/src/MetaTags/Data.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.8/src/MetaTags/AI.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.5/src/MetaTags/AI.php | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Abu Hurayra (HurayraIIT) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-06-16T14:52:13.000Z | Vendor Notified |
| CNA | 2026-06-30T19:21:44.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.