{"affected":[{"defaultStatus":"unaffected","product":"Modula Image Gallery – Photo Grid & Video Gallery","source":"CNA: Wordfence","vendor":"wpchill","versions":[{"lessThanOrEqual":"3.0.17","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-121976","cwes":["CWE-79"],"description":"The Modula plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'items' parameter in versions up to, and including, 3.0.17 This is due to insufficient input sanitization of the per-image 'link' field in the save_merged_items() REST handler and Images\\Adapter::normalize_item_row(), which preserves unknown keys verbatim, combined with output escaping in Modula_Helper::generate_attributes() that applies only esc_attr() to the resulting anchor href and does not strip the 'javascript:' URL scheme. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page and clicks the gallery tile.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.4,"severity":"medium","source":"CNA: Wordfence","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1794050792022,"publishedAt":1794050792022,"references":[{"source":"CNA: Wordfence","tags":[],"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/91d3cbc2-00ca-4384-a52d-84fe2f0328b3?source=cve"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.17/includes/v2/images/class-adapter.php#L655"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.17/includes/v2/rest/class-gallery-upload-controller.php#L914"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.17/includes/v2/class-meta-sync.php#L422"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.17/includes/public/shortcode/class-modula-item-data-processor.php#L629"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/tags/3.0.17/includes/core/helpers/class-modula-helper.php#L17"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/modula-best-grid-gallery/"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/changeset?reponame=&new=3787971%40modula-best-grid-gallery%2Ftags%2F3.0.18&old=3781958%40modula-best-grid-gallery%2Ftags%2F3.0.17"}],"remediation":[],"revision":"eb25bfeb081bd7d5d7ca6299c07712cecc69703d81df68d02de813ac192fbad8","sources":[{"modifiedAt":1794050792022,"name":"CNA: Wordfence","retrievedAt":1794053405509,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121976"}],"ssvc":null,"status":"published","title":"Modula Image Gallery <= 3.0.17 - Authenticated (Author+) Stored Cross-Site Scripting via 'items' Parameter","updatedAt":1794053405509}