{"id":"CVE-2026-14827","aliases":["EUVD-2026-49084","GHSA-x423-2wcq-r3qx"],"status":"published","title":"Calendar \u003c 1.3.18 - Contributor+ Stored XSS via event_link Parameter","description":"The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00431,"percentile":0.37651,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-07-27T06:00:06Z","modified":"2026-07-27T20:33:01Z","products":[{"vendor":"humhub","product":"calendar"},{"vendor":"unknown","product":"calendar"}],"references":[{"url":"https://wpscan.com/vulnerability/b2981b41-b712-43d9-a327-3a376346cec5/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-14827"},{"url":"https://wpscan.com/vulnerability/b2981b41-b712-43d9-a327-3a376346cec5"},{"url":"https://github.com/advisories/GHSA-x423-2wcq-r3qx"}],"sources":{"cve":[{"id":"CVE-2026-14827","title":"Calendar \u003c 1.3.18 - Contributor+ Stored XSS via event_link Parameter","description":"The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.","status":"published","published":"2026-07-27T06:00:06.038Z","modified":"2026-07-27T17:39:03.012Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:38:32.13011Z"}],"euvd":[{"id":"EUVD-2026-49084","description":"The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.","status":"published","published":"2026-07-27T06:00:06Z","modified":"2026-07-27T17:39:03Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T18:02:33.886037Z"}],"ghsa":[{"id":"GHSA-x423-2wcq-r3qx","title":"The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field...","description":"The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.","status":"published","published":"2026-07-27T09:31:26Z","modified":"2026-07-27T18:32:52Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:09:51.407039Z"}],"nvd":[{"id":"CVE-2026-14827","description":"The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.","status":"published","published":"2026-07-27T07:16:26.18Z","modified":"2026-07-27T20:33:01.673Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:32.830533Z"}]}}