{"id":"CVE-2026-119714","title":"My Calendar 3.8.8 before 3.8.11 Unauthenticated Shortcode Injection via mcs Parameter","summary":"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() …","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-94"],"vendor":"joedolson","product":"My Calendar - Accessible Event Manager","affected":["my_calendar_-_accessible_event_manager >= 3.8.8 < 3.8.11"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-30T15:41:43.334329Z"},"published":"2026-10-30","updated":"2026-10-30","sourceUpdated":"2026-10-30T15:42:00.197Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119714","references":[{"url":"https://github.com/joedolson/my-calendar/commit/de875c25d9651abb041b2dfe32f60a4320c66496","label":"Patch Commit"},{"url":"https://github.com/joedolson/my-calendar"},{"url":"https://github.com/joedolson/my-calendar/releases/tag/v3.8.11","label":"My Calendar - Accessible Event Manager v3.8.11 Release Notes"},{"url":"https://github.com/joedolson/my-calendar/blob/v3.8.10/src/my-calendar-search.php#L170"},{"url":"https://www.vulncheck.com/advisories/my-calendar-3.8.8-before-3.8.11-unauthenticated-shortcode-injection-via-mcs-parameter","label":"VulnCheck Advisory: My Calendar 3.8.8 before 3.8.11 Unauthenticated Shortcode Injection via mcs Parameter"}],"tags":["cve.org"],"epss":0.00309,"epssPercentile":0.23881,"ingestedAt":"2026-11-05T16:07:30.456Z","slug":"CVE-2026-119714","body":"## Overview\n\nMy 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.\n\n## Affected\n\n- `my_calendar_-_accessible_event_manager >= 3.8.8 < 3.8.11`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}