{"id":"CVE-2018-20148","aliases":["DEBIAN-CVE-2018-20148","DLA-1673-1","DSA-4401-1","EUVD-2018-12717","GHSA-jgj7-cghf-2wq9","UBUNTU-CVE-2018-20148"],"status":"published","title":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection...","description":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.26819,"percentile":0.98045,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-502"],"published":"2018-12-14T20:00:00Z","modified":"2026-10-24T10:30:52Z","exploits":[{"source":"pocgithub","id":"nth347/CVE-2018-20148_exploit","title":"nth347/CVE-2018-20148_exploit","date":"2021-11-16","url":"https://github.com/nth347/CVE-2018-20148_exploit"}],"fixes":[{"ecosystem":"Debian:12","package":"wordpress","fixed_in":["5.0.1+dfsg1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"wordpress","fixed_in":["5.0.1+dfsg1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"wordpress","fixed_in":["5.0.1+dfsg1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.1+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.1+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.1+dfsg1-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.25+dfsg-1+deb8u1"}]}],"versions":["4.1+dfsg-1","4.1+dfsg-1+deb8u1","4.1+dfsg-1+deb8u10","4.1+dfsg-1+deb8u11","4.1+dfsg-1+deb8u12","4.1+dfsg-1+deb8u13","4.1+dfsg-1+deb8u14","4.1+dfsg-1+deb8u15","4.1+dfsg-1+deb8u16","4.1+dfsg-1+deb8u17","4.1+dfsg-1+deb8u18","4.1+dfsg-1+deb8u2","4.1+dfsg-1+deb8u3","4.1+dfsg-1+deb8u4","4.1+dfsg-1+deb8u5","4.1+dfsg-1+deb8u6","4.1+dfsg-1+deb8u7","4.1+dfsg-1+deb8u8","4.1+dfsg-1+deb8u9","4.1.1+dfsg-1"],"bundled":7},{"source":"osv","ecosystem":"Debian:9","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.5+dfsg-2+deb9u5"}]}],"versions":["4.7.5+dfsg-2","4.7.5+dfsg-2+deb9u1","4.7.5+dfsg-2+deb9u1~bpo8+1","4.7.5+dfsg-2+deb9u2","4.7.5+dfsg-2+deb9u2~bpo8+1","4.7.5+dfsg-2+deb9u3","4.7.5+dfsg-2+deb9u4"],"bundled":8},{"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"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"wordpress","product":"wordpress"}],"references":[{"url":"http://www.securityfocus.com/bid/106220","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://wordpress.org/support/wordpress-version/version-5-0-1/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"https://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-are","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://codex.wordpress.org/Version_4.9.9","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory","advisory"]},{"url":"https://wpvulndb.com/vulnerabilities/9171","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/","tags":["x_refsource_MISC","x_transferred","Press/Media Coverage","Third Party Advisory","advisory"]},{"url":"https://www.debian.org/security/2019/dsa-4401","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/","tags":["x_refsource_MISC","x_transferred","Press/Media Coverage","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20148"},{"url":"https://github.com/advisories/GHSA-jgj7-cghf-2wq9"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-20148","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-20148","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-20148","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-20148","description":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.","status":"published","published":"2018-12-14T20:00:00Z","modified":"2024-08-05T11:51:19.2Z","updated_at":"2026-11-02T14:35:00.237825Z"}],"euvd":[{"id":"EUVD-2018-12717","description":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.","status":"published","published":"2018-12-14T20:00:00Z","modified":"2024-08-05T11:51:19Z","updated_at":"2026-11-03T02:39:31.423203Z"}],"ghsa":[{"id":"GHSA-jgj7-cghf-2wq9","title":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection...","description":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.","status":"published","published":"2022-05-14T01:29:39Z","modified":"2023-02-02T05:04:08Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:51:47.947252Z"}],"nvd":[{"id":"CVE-2018-20148","description":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. 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This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.","status":"published","published":"2018-12-14T20:29:00.39Z","modified":"2026-10-23T18:03:04.510734756Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:30.57382Z"},{"id":"UBUNTU-CVE-2018-20148","description":"In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.","status":"published","published":"2018-12-14T20:29:00Z","modified":"2025-10-24T04:47:17Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:17.91743Z"},{"id":"DLA-1673-1","title":"wordpress - security update","status":"published","published":"2019-02-11T00:00:00Z","modified":"2026-03-09T01:23:37.293032Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DSA-4401-1","title":"wordpress - security update","status":"published","published":"2019-03-01T00:00:00Z","modified":"2026-03-09T02:10:14.434121Z","updated_at":"2026-11-02T15:46:16.862196Z"}]}}