CVE-2017-20289

HighCVSS 7.5/10Last modified Oct 23, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-98

Affected software

Vendor	Product	Versions
Broadstreet	Ad Widget	>= 2.2.0, < 2.12.0

References

Timeline

Published: Oct 22, 2026
Last modified: Oct 23, 2026
NVD status: Deferred

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