VULNERABILITY INTELLIGENCE

CVE-2017-20207

CVSS score9.8 CRITICAL
EPSS probability0.73%
CISA KEVNot currently listed
Published2025-10-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.

Weakness classification

  • CWE-502: Deserialization of Untrusted Data

Primary references