CVE-2026-12385 Overview
CVE-2026-12385 is a Sensitive Information Exposure vulnerability [CWE-200] affecting the Smart Slider 3 plugin for WordPress in all versions up to and including 3.5.1.37. The flaw resides in the handling of the keyword parameter within the plugin's AJAX content controller. Authenticated attackers holding Contributor-level access or above can extract titles and full content excerpts from private, draft, pending, trashed, and auto-draft posts authored by any user, including Administrators and Editors. The required nonce is emitted on /wp-admin/post-new.php, a page accessible to Contributors through the edit_posts capability, which lowers the barrier to exploitation.
Critical Impact
Any authenticated Contributor can harvest unpublished editorial content, embargoed announcements, and internal drafts authored by higher-privileged users.
Affected Products
- Smart Slider 3 plugin for WordPress — all versions through 3.5.1.37
- Nextend Framework/Content/ControllerAjaxContent.php component
- Nextend Framework/Content/WordPress/WordPressContent.php component
Discovery Timeline
- 2026-07-13 - CVE-2026-12385 published to NVD
- 2026-07-14 - Last updated in NVD database
Technical Details for CVE-2026-12385
Vulnerability Analysis
The vulnerability exists in Smart Slider 3's AJAX content controller, which accepts a keyword parameter used to query WordPress posts for the plugin's content selection interface. The query logic does not restrict results by post status or authorship, so it returns rows for private, draft, pending, trash, and auto-draft posts regardless of who owns them. The edit_posts capability check applied by the plugin is insufficient because Contributor accounts legitimately hold that capability for their own content, not for other users' unpublished work.
Exploitation returns post titles and content excerpts, which frequently contain embargoed press releases, unpublished research, credentials pasted into drafts, or internal editorial notes.
Root Cause
The root cause is missing authorization enforcement on the queried post set. The plugin relies on a capability gate (edit_posts) that grants broad read access, and it omits per-post ownership or status filtering before returning matches. This is a classic broken access control pattern combined with information exposure.
Attack Vector
The attacker authenticates as any Contributor-level user. They load /wp-admin/post-new.php to obtain the nonce emitted for Smart Slider 3, then issue an authenticated AJAX request to the plugin's content endpoint with a chosen keyword value. The server returns matching post titles and excerpts across all authors and non-public post statuses.
The vulnerability manifests in ControllerAjaxContent.php and WordPressContent.php. See the Wordfence Vulnerability Assessment and the WordPress Smart Slider Changeset for the patched code paths.
Detection Methods for CVE-2026-12385
Indicators of Compromise
- Repeated authenticated POST requests from Contributor accounts to admin-ajax.php referencing the Smart Slider 3 action with varied keyword values.
- Access patterns where a Contributor loads /wp-admin/post-new.php and immediately issues sequential AJAX content queries.
- Unusual enumeration of short or single-character keyword values suggesting brute-force content discovery.
Detection Strategies
- Review WordPress access logs for Contributor sessions issuing high volumes of admin-ajax.php calls to the Smart Slider 3 content endpoint.
- Correlate nonce retrieval from post-new.php with subsequent AJAX content queries from the same session within a short window.
- Alert on Contributor accounts whose request patterns diverge from normal authoring activity, such as scripted keyword iteration.
Monitoring Recommendations
- Enable verbose logging on admin-ajax.php and retain request bodies for forensic review.
- Monitor for creation of low-privilege accounts followed by immediate access to plugin AJAX endpoints.
- Track outbound data volume from admin-ajax.php responses to identify bulk excerpt extraction.
How to Mitigate CVE-2026-12385
Immediate Actions Required
- Update Smart Slider 3 to a version newer than 3.5.1.37 that includes the fix from changeset 3599123.
- Audit existing Contributor, Author, and Editor accounts and remove any that are unused or unattributed.
- Review draft, private, pending, and trashed posts for sensitive material that may have been exposed and rotate any embedded secrets.
Patch Information
The Smart Slider 3 maintainers released a fix tracked in WordPress Plugin Changeset 3599123. Administrators should upgrade the plugin through the WordPress dashboard or via WP-CLI to the first release above 3.5.1.37.
Workarounds
- Temporarily deactivate the Smart Slider 3 plugin until the patched version is deployed.
- Restrict Contributor role assignments and require multi-factor authentication for all authenticated WordPress users.
- Deploy a web application firewall rule to block requests to the Smart Slider 3 AJAX content action from users below the Editor role.
# Update Smart Slider 3 via WP-CLI to the patched release
wp plugin update smart-slider-3
wp plugin get smart-slider-3 --field=version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
