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CVE-2017-20289

HIGH 7.7 CVSS 4.0
Published
October 22, 2026
Last modified
October 23, 2026
NVD status
Deferred
Reported by
disclosure@vulncheck.com
Weakness
CWE-98
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Description

Broadstreet Ad Widget plugin for WordPress 2.2.0 before 2.12.0 contains a local file inclusion vulnerability that allows authenticated users to execute attacker-chosen PHP files by passing unsanitized input to require in views/modal/index.php. Attackers can supply directory traversal sequences in the 'step' parameter, optionally with a null byte, to include local files and execute PHP code. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Broadstreet Ad Widget — From 2.2.0 (including) to 2.12.0 (excluding)

References

  • cxsecurity.com https://cxsecurity.com/issue/WLB-2017100084
  • github.com https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/ad-widget-lfi.yaml
  • packetstorm.news https://packetstorm.news/files/id/144553/
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/1628751/ad-widget
  • wordpress.org https://wordpress.org/plugins/ad-widget/
  • wpscan.com https://wpscan.com/vulnerability/caca21fe-56bf-4d4c-afc8-4a218e52f0a2
  • www.vulncheck.com https://www.vulncheck.com/advisories/broadstreet-ad-widget-wordpress-plugin-2.12.0-local-file-inclusion-via-step-parameter
  • nvd.nist.gov Official NVD record