CVE-2023-52219 CRITICAL

CVE-2023-52219: WordPress Gecka Terms Thumbnails Plugin <= 1.1 is vulnerable to PHP Object Injection

Vendor Gecka

Product Gecka Terms Thumbnails

Weakness CWE-502 · Unsafe deserialization

Published January 8, 2024

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

9.9/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Gecka Gecka Terms Thumbnails.This issue affects Gecka Terms Thumbnails: from n/a through 1.1.

Explanation of Vulnerability in Simple Terms

02Summary

Gecka Terms Thumbnails versions 1.1 and earlier contain a deserialization vulnerability that allows authenticated attackers to execute arbitrary code on the site. An attacker with low-level access can craft malicious serialized data that, when processed by the plugin, runs their own PHP code with full site privileges. This affects confidentiality, integrity, and availability of the entire installation.

What an attacker can do

03Attacker Capabilities

Run arbitrary PHP code on the site with full administrative privileges.

Potential impact on your site

04Site Impact

Complete site compromise: data theft, malware injection, user account takeover, or total site destruction.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account (subscriber or contributor role or equivalent).

Key dates

06Disclosure timeline

January 8, 2024 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-52219 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html AskarLabs — CWE-502 write-up Deserialization of Untrusted Data

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