CVE-2026-77187: fallo de gravedad media en joedolson My Calendar – Accessible Event Manager
My Calendar <= 3.8.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.4epss 0.3%
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes in all versions up to, and including, 3.8.3 due to insufficient input sanitization and output escaping. 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
joedolson · My Calendar – Accessible Event ManagerCVEs relacionadas — joedolson My Calendar – Accessible Event Manager
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-6854HIGHMy Calendar <= 3.7.8 - Unauthenticated SQL Injection via 'mc_auth' and 'mc_host' ParametersEPSS 1.6%CVE-2026-11896MEDIUMMy Calendar <= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' ParameterEPSS 0.5%CVE-2026-104798CRITICALMy Calendar <= 3.8.7 - Unauthenticated Privilege Escalation to 'mcs' Parameter via Reflected Shortcode Injection into 'above' AttributeEPSS 0.5%CVE-2026-77186MEDIUMMy Calendar <= 3.8.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'fallback' Shortcode AttributeEPSS 0.4%CVE-2026-7525MEDIUMMy Calendar <= 3.7.9 - Authenticated (Custom+) Missing Authorization to Unauthorized Event Publication via 'event_approved' ParameterEPSS 0.3%CVE-2026-2355MEDIUMMy Calendar – Accessible Event Manager <= 3.7.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode AttributesEPSS 0.3%
Referencias
https://github.com/joedolson/my-calendar/commit/89bbf7314fac84cdb89e520e8b7b6d69eee8dd3chttps://plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.0/my-calendar-events.php#L1102https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.0/my-calendar.php#L563https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.0/my-calendar-shortcodes.php#L358https://www.wordfence.com/threat-intel/vulnerabilities/id/8c8beca2-d02b-4379-99e9-8090ef84ca6d?source=cve