EUVD-2026-59857
GHSA-97qv-vv28-xpcf
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Contributor-level authentication required (PR:L); read-only SQL injection yields high confidentiality impact with no integrity or availability change and unchanged scope.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
The Fullscreen Galleria plugin for WordPress is vulnerable to generic SQL Injection via 'href' Attribute in Post Content in all versions up to, and including, 1.6.12 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
AnalysisAI
SQL Injection in the Fullscreen Galleria WordPress plugin (all versions through 1.6.12) allows authenticated attackers holding contributor-level access or higher to append arbitrary SQL subqueries via an unsanitized 'href' attribute in post content, enabling full read-access to the WordPress database. Multiple vulnerable sinks in galleria-fs.php (lines 68, 74, 146, 1074, 1078) were identified and disclosed by Wordfence; upstream fix commits have been published to the WordPress plugin repository. No public exploit code and no CISA KEV listing have been identified at time of analysis, placing this at moderate real-world priority, elevated for sites with open contributor registration.
Technical ContextAI
The Fullscreen Galleria plugin (CPE: cpe:2.3:a:pdamsten:fullscreen_galleria:*:*:*:*:*:*:*:*) processes 'href' attribute values authored in WordPress post content and interpolates them directly into SQL query strings without adequate escaping or use of prepared statements - the canonical pattern described by CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). Vulnerable sinks are located in galleria-fs.php at lines 68, 74, 146, 1074, and 1078, as confirmed by Wordfence source references. Because the WordPress contributor role permits authoring and saving post content, user-controlled attribute values reach these unsanitized SQL paths without the data being scrubbed by WordPress core sanitization. The injection is read-only in its demonstrated impact, consistent with the CVSS I:N rating, suggesting SELECT-context injection rather than a stacked-query write vector.
RemediationAI
Upstream fix commits have been published to the WordPress plugin repository (changesets 3635063 and 3635066 at plugins.trac.wordpress.org); however, a specific patched release version number is not independently confirmed from available data - only commit references are available, not a tagged release. Administrators should monitor the plugin changelog and update to any version above 1.6.12 as soon as a patched release is confirmed. As an immediate compensating control, restrict the contributor role exclusively to fully trusted users, since exploitation requires at minimum contributor-level WordPress authentication; revoking or not granting contributor access to untrusted or self-registered users eliminates the attack vector with no functional side effects for administrators. Disabling the Fullscreen Galleria plugin entirely removes the attack surface completely, at the cost of gallery functionality. A WAF rule blocking SQL metacharacter sequences in post content fields can provide additional depth-in-defense but does not substitute for patching, as filter evasion techniques exist for common WAF patterns. Reference the Wordfence advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/48d6cd72-6a38-403b-9a8f-960e99d8801f) and WordPress SVN changesets for patch version confirmation.
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External POC / Exploit Code
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