{"id":"CVE-2020-4046","aliases":["BIT-wordpress-2020-4046","BIT-wordpress-multisite-2020-4046","DEBIAN-CVE-2020-4046","EUVD-2020-25304","GHSA-rpwf-hrh2-39jf","UBUNTU-CVE-2020-4046"],"status":"published","title":"Authenticated XSS through embed block in WordPress","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","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":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02127,"percentile":0.82067,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79","CWE-80"],"published":"2020-06-12T15:55:12Z","modified":"2026-11-08T02:45:17Z","fixes":[{"ecosystem":"Bitnami","package":"wordpress","fixed_in":["3.7.34","3.8.34","3.9.32","4.0.31","4.1.31","4.2.28","4.3.24","4.4.23","4.5.22","4.6.19","4.7.18","4.8.14","4.9.15","5.0.10","5.1.6","5.2.7","5.3.4","5.4.2"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"wordpress-multisite","fixed_in":["3.7.34","3.8.34","3.9.32","4.0.31","4.1.31","4.2.28","4.3.24","4.4.23","4.5.22","4.6.19","4.7.18","4.8.14","4.9.15","5.0.10","5.1.6","5.2.7","5.3.4","5.4.2"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"wordpress","fixed_in":["5.4.2+dfsg1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"wordpress","fixed_in":["5.4.2+dfsg1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"wordpress","fixed_in":["5.4.2+dfsg1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"wordpress","ranges":[{"type":"SEMVER","events":[{"introduced":"3.7.0"},{"fixed":"3.7.34"},{"introduced":"3.8.0"},{"fixed":"3.8.34"},{"introduced":"3.9.0"},{"fixed":"3.9.32"},{"introduced":"4.0.0"},{"fixed":"4.0.31"},{"introduced":"4.1.0"},{"fixed":"4.1.31"},{"introduced":"4.2.0"},{"fixed":"4.2.28"},{"introduced":"4.3.0"},{"fixed":"4.3.24"},{"introduced":"4.4.0"},{"fixed":"4.4.23"},{"introduced":"4.5.0"},{"fixed":"4.5.22"},{"introduced":"4.6.0"},{"fixed":"4.6.19"},{"introduced":"4.7.0"},{"fixed":"4.7.18"},{"introduced":"4.8.0"},{"fixed":"4.8.14"},{"introduced":"4.9.0"},{"fixed":"4.9.15"},{"introduced":"5.0.0"},{"fixed":"5.0.10"},{"introduced":"5.1.0"},{"fixed":"5.1.6"},{"introduced":"5.2.0"},{"fixed":"5.2.7"},{"introduced":"5.3.0"},{"fixed":"5.3.4"},{"introduced":"5.4.0"},{"fixed":"5.4.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"wordpress-multisite","ranges":[{"type":"SEMVER","events":[{"introduced":"3.7.0"},{"fixed":"3.7.34"},{"introduced":"3.8.0"},{"fixed":"3.8.34"},{"introduced":"3.9.0"},{"fixed":"3.9.32"},{"introduced":"4.0.0"},{"fixed":"4.0.31"},{"introduced":"4.1.0"},{"fixed":"4.1.31"},{"introduced":"4.2.0"},{"fixed":"4.2.28"},{"introduced":"4.3.0"},{"fixed":"4.3.24"},{"introduced":"4.4.0"},{"fixed":"4.4.23"},{"introduced":"4.5.0"},{"fixed":"4.5.22"},{"introduced":"4.6.0"},{"fixed":"4.6.19"},{"introduced":"4.7.0"},{"fixed":"4.7.18"},{"introduced":"4.8.0"},{"fixed":"4.8.14"},{"introduced":"4.9.0"},{"fixed":"4.9.15"},{"introduced":"5.0.0"},{"fixed":"5.0.10"},{"introduced":"5.1.0"},{"fixed":"5.1.6"},{"introduced":"5.2.0"},{"fixed":"5.2.7"},{"introduced":"5.3.0"},{"fixed":"5.3.4"},{"introduced":"5.4.0"},{"fixed":"5.4.2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.2+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.2+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.2+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3+dfsg-1","4.3.1+dfsg-1","4.4+dfsg-1","4.4.1+dfsg-1","4.4.2+dfsg-1","4.4.2+dfsg-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.2+dfsg-2","4.8.3+dfsg-1","4.9.1+dfsg-1","4.9.2+dfsg-1","4.9.4+dfsg-1","4.9.5+dfsg1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.2+dfsg1-1","5.2.4+dfsg1-1","5.3.2+dfsg1-1","5.3.2+dfsg1-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.7.1+dfsg1-2ubuntu1","5.8.1+dfsg1-2ubuntu1","5.8.2+dfsg1-1ubuntu1","5.8.3+dfsg1-1ubuntu1","5.8.3+dfsg1-1ubuntu1.1"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"wordpress","product":"wordpress"},{"vendor":"wordpress","product":"wordpress-develop"}],"references":[{"url":"https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rpwf-hrh2-39jf","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://www.debian.org/security/2020/dsa-4709","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2020/07/msg00000.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4046","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-4046","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-4046","tags":["report"]},{"url":"https://core.trac.wordpress.org/changeset/47947","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-4046","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-4046","title":"Authenticated XSS through embed block in WordPress","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2020-06-12T15:55:12Z","modified":"2024-08-04T07:52:20.719Z","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":"cna"}],"cwes":["CWE-80"],"updated_at":"2026-11-02T14:35:55.797746Z"}],"euvd":[{"id":"EUVD-2020-25304","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2020-06-12T15:55:12Z","modified":"2024-08-04T07:52:20Z","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"}],"updated_at":"2026-11-03T03:08:07.872525Z"}],"nvd":[{"id":"CVE-2020-4046","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2020-06-12T16:15:10.45Z","modified":"2026-06-17T03:19:28.853Z","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":"secondary"},{"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-80","CWE-79"],"updated_at":"2026-11-02T14:06:07.249892Z"}],"osv":[{"id":"CVE-2020-4046","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2020-06-12T16:15:10.45Z","modified":"2026-11-08T02:45:17.047631761Z","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"}],"updated_at":"2026-11-08T02:57:30.447698Z"},{"id":"DEBIAN-CVE-2020-4046","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2020-06-12T16:15:10.45Z","modified":"2026-10-26T12:02:49.720255537Z","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"}],"updated_at":"2026-11-02T15:45:34.019707Z"},{"id":"UBUNTU-CVE-2020-4046","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2020-06-12T16:15:00Z","modified":"2025-10-24T04:48:16Z","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"},{"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"}],"updated_at":"2026-11-02T15:54:25.179924Z"},{"id":"BIT-wordpress-2020-4046","title":"Authenticated XSS through embed block in WordPress","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2024-03-06T11:11:13.048Z","modified":"2026-09-08T08:48:22.474971064Z","updated_at":"2026-11-02T15:28:36.104787Z"},{"id":"BIT-wordpress-multisite-2020-4046","title":"Authenticated XSS through embed block in WordPress","description":"In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).","status":"published","published":"2024-03-06T11:11:01.994Z","modified":"2026-09-08T08:48:21.707092386Z","updated_at":"2026-11-02T15:28:36.455807Z"}]}}