CVE-2026-119714 Details
Description
My Calendar WordPress plugin 3.8.8 before 3.8.11 contains a shortcode injection vulnerability that allows unauthenticated attackers to execute registered shortcodes via the mcs search parameter. The mcs value reaches mc_search_results() in src/my-calendar-search.php without bracket encoding before do_shortcode runs, so a GET request triggers shortcodes on any page or post, enabling content injection and spoofing.
A shortcode injection vulnerability has been identified in the My Calendar WordPress plugin, specifically in versions 3.8.8 prior to 3.8.11. This vulnerability allows unauthenticated attackers to execute registered shortcodes through the 'mcs' search parameter. The 'mcs' value is passed to the 'mc_search_results()' function in 'src/my-calendar-search.php' without proper encoding, enabling the execution of shortcodes on any page or post. This flaw could be exploited to inject content or spoof information.
Users can update to My Calendar WordPress plugin version 3.8.11 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 30, 2026CISA-ADP
Assessed Oct 30, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| My Calendar | >= 3.8.8, < 3.8.11 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 30, 2026 | New CVE Received | [email protected] |
| Oct 30, 2026 | CVE Modified | CISA-ADP |