THREATPORT/VULNERABILITY/CVE-2018-20148
CRITICAL SEVERITY

CVE-2018-20148

Wordpress vulnerability

CVSS
9.8
EPSS
30.9%
EPSS pct
98th
Exploited
No known
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.
Affected vendor
Wordpress
Affected product
Wordpress
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-502 — Deserialization of Untrusted Data
Published
2018-12-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 30.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2018-20148

  • Confirm whether Wordpress Wordpress is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-20148.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-20148

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-20148 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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