CVE-2026-6854: high-severity vulnerability in joedolson My Calendar – Accessible Event Manager
My Calendar <= 3.7.8 - Unauthenticated SQL Injection via 'mc_auth' and 'mc_host' Parameters
Published
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36Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 7.5epss 1.6%
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'mc_auth' parameter in all versions up to, and including, 3.7.8 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
joedolson · My Calendar – Accessible Event ManagerRelated CVEs — joedolson My Calendar – Accessible Event Manager
In the same product, most dangerous first.
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-2026-77187MEDIUMMy Calendar <= 3.8.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'before' and 'after' Shortcode AttributesEPSS 0.3%CVE-2026-2355MEDIUMMy Calendar – Accessible Event Manager <= 3.7.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode AttributesEPSS 0.3%