CVE-2026-119714

Medium

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductMy Calendar - Accessible Event Manager

PublishedOct 30, 2026

First seenNov 4, 2026

Weakness typeCWE-94Code injection

How to fix

Update

joedolson My Calendar - Accessible Event Manager3.8.11 or later

Patches

github.com/joedolson/my-calendar/commit/de875c25d9651abb041b2dfe32f60a4320c66496

Vendor advisories

github.com/joedolson/my-calendar/releases/tag/v3.8.11

Affected products

Product	Affected versions	Fixed in
joedolson My Calendar - Accessible Event Manager	3.8.8 ≤ v < 3.8.11	3.8.11

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