{"id":"CVE-2021-24826","aliases":["EUVD-2021-11738","GHSA-h77p-7f34-7fqv"],"status":"published","title":"Custom Content Shortcode \u003c 4.0.2 - Authenticated Stored Cross-Site Scripting","description":"The Custom Content Shortcode WordPress plugin before 4.0.2 does not escape custom fields before outputting them, which could allow Contributor+ (v \u003c 4.0.1) or Admin+ (v \u003c 4.0.2) users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed. Please note that such attack is still possible by admin+ in single site blogs by default (but won't be when the unfiltered_html is disallowed)","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00604,"percentile":0.49362,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2022-03-07T08:16:06Z","modified":"2026-06-17T03:40:58Z","products":[{"vendor":"custom_content_shortcode_project","product":"custom_content_shortcode"},{"vendor":"unknown","product":"custom content shortcode"}],"references":[{"url":"https://wpscan.com/vulnerability/e247d78a-7243-486c-a017-7471a8dcb800","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24826"},{"url":"https://github.com/advisories/GHSA-h77p-7f34-7fqv"}],"sources":{"cve":[{"id":"CVE-2021-24826","title":"Custom Content Shortcode \u003c 4.0.2 - Authenticated Stored Cross-Site Scripting","description":"The Custom Content Shortcode WordPress plugin before 4.0.2 does not escape custom fields before outputting them, which could allow Contributor+ (v \u003c 4.0.1) or Admin+ (v \u003c 4.0.2) users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed. Please note that such attack is still possible by admin+ in single site blogs by default (but won't be when the unfiltered_html is disallowed)","status":"published","published":"2022-03-07T08:16:06Z","modified":"2024-08-03T19:42:17.327Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-11738","description":"The Custom Content Shortcode WordPress plugin before 4.0.2 does not escape custom fields before outputting them, which could allow Contributor+ (v \u003c 4.0.1) or Admin+ (v \u003c 4.0.2) users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed. Please note that such attack is still possible by admin+ in single site blogs by default (but won't be when the unfiltered_html is disallowed)","status":"published","published":"2022-03-07T08:16:06Z","modified":"2024-08-03T19:42:17Z","updated_at":"2026-11-03T03:24:55.867627Z"}],"ghsa":[{"id":"GHSA-h77p-7f34-7fqv","title":"The Custom Content Shortcode WordPress plugin before 4.0.2 does not escape custom fields before...","description":"The Custom Content Shortcode WordPress plugin before 4.0.2 does not escape custom fields before outputting them, which could allow Contributor+ (v \u003c 4.0.1) or Admin+ (v \u003c 4.0.2) users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed. Please note that such attack is still possible by admin+ in single site blogs by default (but won't be when the unfiltered_html is disallowed)","status":"published","published":"2022-03-08T00:00:31Z","modified":"2023-02-03T05:06:46Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:53:56.97591Z"}],"nvd":[{"id":"CVE-2021-24826","description":"The Custom Content Shortcode WordPress plugin before 4.0.2 does not escape custom fields before outputting them, which could allow Contributor+ (v \u003c 4.0.1) or Admin+ (v \u003c 4.0.2) users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed. Please note that such attack is still possible by admin+ in single site blogs by default (but won't be when the unfiltered_html is disallowed)","status":"published","published":"2022-03-07T09:15:08.26Z","modified":"2026-06-17T03:40:58.407Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/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":"2026-11-02T14:07:05.198719Z"}]}}