CVE-2025-39503 CRITICAL

CVE-2025-39503: WordPress Goodlayers Hotel plugin <= 3.1.4 - PHP Object Injection vulnerability

Vendor Goodlayers

Product Goodlayers Hotel

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 Hotel gdlr-hotel allows Object Injection.This issue affects Goodlayers Hotel: from n/a through <= 3.1.4.

Explanation of Vulnerability in Simple Terms

02Summary

Goodlayers Hotel versions up to 3.1.4 contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on the site. The vulnerability exists because the product deserializes untrusted data without proper validation. An attacker can exploit this remotely over the network without needing credentials 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.

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

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-39503 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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