{"id":"CVE-2021-24604","aliases":["EUVD-2021-11516","GHSA-p555-vm74-xq5v"],"status":"published","title":"Availability Calendar \u003c 1.2.2 - Authenticated Stored Cross-Site Scripting","description":"The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post where the associated shortcode is embed, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00617,"percentile":0.49926,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-09-20T10:06:31Z","modified":"2026-06-17T03:40:18Z","products":[{"vendor":"offshorewebmaster","product":"availability_calendar"},{"vendor":"steve","product":"availability calendar"},{"vendor":"unknown","product":"availability calendar"}],"references":[{"url":"https://wpscan.com/vulnerability/d084c5b1-45f1-4e7e-b3e9-3c98ae4bce9c","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24604"},{"url":"https://github.com/advisories/GHSA-p555-vm74-xq5v"}],"sources":{"cve":[{"id":"CVE-2021-24604","title":"Availability Calendar \u003c 1.2.2 - Authenticated Stored Cross-Site Scripting","description":"The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post where the associated shortcode is embed, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed","status":"published","published":"2021-09-20T10:06:31Z","modified":"2024-08-03T19:35:20.314Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.000797Z"}],"euvd":[{"id":"EUVD-2021-11516","description":"The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post where the associated shortcode is embed, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed","status":"published","published":"2021-09-20T10:06:31Z","modified":"2024-08-03T19:35:20Z","updated_at":"2026-11-03T03:24:56.857735Z"}],"ghsa":[{"id":"GHSA-p555-vm74-xq5v","title":"The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category...","description":"The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post where the associated shortcode is embed, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed","status":"published","published":"2022-05-24T19:15:18Z","modified":"2023-01-30T05:02:25Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:38.066268Z"}],"nvd":[{"id":"CVE-2021-24604","description":"The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post where the associated shortcode is embed, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed","status":"published","published":"2021-09-20T10:15:08.88Z","modified":"2026-06-17T03:40:18.797Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:58.933037Z"}]}}