CVE-2026-65048 is an unauthenticated stored cross-site scripting vulnerability in the Ninja Forms plugin for WordPress affecting versions 3.10.4 through 3.14.9. The flaw is in the Repeatable Fieldset feature: parseSubmissionIndex() accepts arbitrary strings as submission indexes without enforcing numeric validation, and admin_form_element() later inserts that index into generated HTML without proper escaping. An attacker can submit a public form containing a crafted repeater child key with malicious script content, which is then stored and rendered in the WordPress administrative interface. When an administrator views the affected submission in the admin panel, the injected JavaScript executes in the administrator's browser.
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Cross-references every affected SKU, including bundled OEM variants.
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