EUVD-2026-50096
GHSA-x3c9-qfw8-8r9c
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Primary rating from Vendor (wordfence) · only source for this CVE.
CVSS VectorVendor: wordfence
Lifecycle Timeline
2DescriptionCVE.org
The Newsletters Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'link' attribute of the post_thumbnail (and newsletters_post_thumbnail) shortcodes in versions up to and including 4.15. This is due to insufficient input sanitization and output escaping in the post_thumbnail() method in helpers/shortcode.php, which concatenates the user-controlled $link shortcode attribute directly into an href attribute without esc_url() or esc_attr(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AnalysisAI
Stored Cross-Site Scripting in Newsletters Lite WordPress plugin versions ≤4.15 permits authenticated attackers with contributor-level access to inject arbitrary web scripts by abusing the 'link' attribute of the post_thumbnail and newsletters_post_thumbnail shortcodes. When a privileged user accesses a page containing the injected shortcode, the script executes in their session, potentially leading to session hijacking or credential theft. No active exploitation or public proof-of-concept is identified at time of analysis.
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External POC / Exploit Code
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