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High severity · published Jul 8, 2026
CVE-2026-6854
My Calendar <= 3.7.8 - Unauthenticated SQL Injection via 'mc_auth' and 'mc_host' Parameters
7.5
CVSS
1.6%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
My Calendar – Accessible Event Manager · joedolson
through 3.7.8 · source: vendor
Affected product
MC
My Calendar – Accessible Event Manager
joedolson
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6854
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6854
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3515996/my-calendar
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/aa1ed81c-04cb-4ccd-8c30-b1d943730909?source=cve
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