Critical severity9.8OSV Advisory· Published Dec 14, 2018· Updated Jun 17, 2026
CVE-2018-20148
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*range: <4.9.9
- (no CPE)range: 4.9.8
- (no CPE)range: <4.9.9 and <5.0.1
Patches
Vulnerability mechanics
References
10- blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-arenvdExploitThird Party Advisory
- www.securityfocus.com/bid/106220nvdThird Party AdvisoryVDB Entry
- codex.wordpress.org/Version_4.9.9nvdProductVendor Advisory
- lists.debian.org/debian-lts-announce/2019/02/msg00019.htmlnvdMailing ListThird Party Advisory
- wordpress.org/news/2018/12/wordpress-5-0-1-security-release/nvdRelease NotesVendor Advisory
- wordpress.org/support/wordpress-version/version-5-0-1/nvdRelease NotesVendor Advisory
- wpvulndb.com/vulnerabilities/9171nvdVendor Advisory
- www.debian.org/security/2019/dsa-4401nvdThird Party Advisory
- www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/nvdPress/Media CoverageThird Party Advisory
- www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/nvdPress/Media CoverageThird Party Advisory
News mentions
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