What is CVE-2026-12939?
The Newsletters Lite plugin for WordPress up to version 4.15 is vulnerable to Stored Cross-Site Scripting via the 'link' attribute of the post_thumbnail shortcode. This flaw allows attackers to inject malicious scripts due to insufficient input sanitization and output escaping. Users should update the plugin to the latest version immediately.
Azərbaycanca: WordPress üçün Newsletters Lite plaginin 4.15-ə qədərki versiyalarında saxlanmış XSS (Stored Cross-Site Scripting) zəifliyi aşkar edilib. Bu zəiflik post_thumbnail shortcode-unun link atributu vasitəsilə xüsusi skriptlərin sayta yeridilməsinə imkan verir. Plagindən istifadə edən saytlar dərhal ən son versiyaya yeniləməlidir.
Related CVEs
link basis: same weakness class CWE-79
FAQ2
Which versions of the Newsletters Lite plugin for WordPress are affected by CVE-2026-12939?
This Stored XSS vulnerability exists in versions of the plugin up to 4.15.
What is the attack vector used in CVE-2026-12939?
The vulnerability is exploited via the 'link' attribute of the `post_thumbnail` shortcode.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.