CVE-2025-39500 CRITICAL

CVE-2025-39500: WordPress Goodlayers Hostel Plugin <= 3.1.2 - PHP Object Injection vulnerability

Vendor Goodlayers
Product Goodlayers Hostel
Weakness CWE-502 · Unsafe deserialization
Published May 23, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in GoodLayers Goodlayers Hostel gdlr-hostel allows Object Injection.This issue affects Goodlayers Hostel: from n/a through <= 3.1.2.

Explanation of Vulnerability in Simple Terms

02Summary

Goodlayers Hostel versions 3.1.2 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on the site. The vulnerability exists in how the product processes untrusted serialized data without proper validation. An attacker can exploit this remotely over the network without requiring authentication or user interaction.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site, read sensitive data, modify content, or take the site offline.

Potential impact on your site

04Site Impact

Complete compromise of the site and server; attacker gains full control over all data and functionality.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

May 23, 2025 CVE published
April 28, 2026 Record updated