Vulnerability in joedolson My Calendar - Accessible Event Manager

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/joedolson/my-calendar
• github.com/joedolson/my-calendar/blob/v3.8.10/src/my-calendar-search.php
• github.com/joedolson/my-calendar/commit/de875c25d9651abb041b2dfe32f60a4320c66496
• github.com/joedolson/my-calendar/releases/tag/v3.8.11
• www.vulncheck.com/advisories/my-calendar-3.8.8-before-3.8.11-unauthenticated-shortcode-…