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.
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History
Wed, 29 Jul 2026 15:30:00 +0000
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ssvc
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Wed, 29 Jul 2026 03:45:00 +0000
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Contrid
Contrid newsletters Wordpress Wordpress wordpress |
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| Vendors & Products |
Contrid
Contrid newsletters Wordpress Wordpress wordpress |
Wed, 29 Jul 2026 02:15:00 +0000
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| Description | 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. | |
| Title | Newsletters <= 4.15 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'link' Shortcode Attribute | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published:
Updated: 2026-07-29T15:06:29.543Z
Reserved: 2026-06-22T19:37:29.147Z
Link: CVE-2026-12939
Updated: 2026-07-29T15:06:18.057Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-29T03:30:03Z
Weaknesses