CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:NCVE-2026-119714
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.
Severity
CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N- CWE
- CWE-94
- Published
- Modified
- Record from
- the NVD, synced
References
- https://github.com/joedolson/my-calendar
- https://github.com/joedolson/my-calendar/blob/v3.8.10/src/my-calendar-search.php#L170
- https://github.com/joedolson/my-calendar/commit/de875c25d9651abb041b2dfe32f60a4320c66496
- https://github.com/joedolson/my-calendar/releases/tag/v3.8.11
- https://www.vulncheck.com/advisories/my-calendar-3.8.8-before-3.8.11-unauthenticated-shortcode-injection-via-mcs-parameter