CVE-2026-12939: fallo de gravedad media en contrid Newsletters
Newsletters <= 4.15 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'link' Shortcode Attribute
Publicada el
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.4epss 0.3%
probabilidad de explotación
0.3%top 74% de las CVE
explotación observada
noninguna fuente lo reporta
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Productos afectados
contrid · NewslettersCVEs relacionadas — contrid Newsletters
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-3018HIGHNewsletters <= 4.13 - Unauthenticated SQL Injection via wpmlsubscriber_id ParameterEPSS 1.5%CVE-2025-4857HIGHNewsletters <= 4.9.9.9 - Authenticated (Administrator+) Local File InclusionEPSS 0.8%CVE-2024-8247HIGHNewsletters <= 4.9.9.2 - Authenticated Privilege EscalationEPSS 0.5%CVE-2024-7411MEDIUMNewsletters <= 4.9.9 - Unauthenticated Full Path DisclosureEPSS 0.4%CVE-2025-3107MEDIUMNewsletters <= 4.9.9.8 - Authenticated (Contributor+) SQL Injection orderby ParameterEPSS 0.4%CVE-2026-75908MEDIUMNewsletters <= 4.17 - Missing Authorization to Authenticated (Author+) Arbitrary Modification via 'newsletters_mailinglistsroles' POST ParameterEPSS 0.4%
Referencias
https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/shortcode.php#L327https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/shortcode.php#L337https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/shortcode.php#L782https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/includes/checkinit.php#L182https://plugins.trac.wordpress.org/changeset?reponame=&old=3621582%40newsletters-lite&new=3621582%40newsletters-litehttps://www.wordfence.com/threat-intel/vulnerabilities/id/2ca8ab94-45b8-4705-b23b-dbc743572121?source=cve