What is the CVSS score of CVE-2025-39354?

CVE-2025-39354 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Which versions of Grand Conference are affected by CVE-2025-39354?

Organizations using Deserialization of Untrusted Data vulnerability in ThemeGoods Grand Conference face critical risk from CVE-2025-39354, a insecure deserialization vulnerability rated CVSS 9.8.

How to fix or mitigate CVE-2025-39354?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Restrict deserialization to trusted data sources and implement integrity checks.

Grand Conference CVE-2025-39354

CRITICAL

Deserialization of Untrusted Data (CWE-502)

2025-05-19 audit@patchstack.com

WordPress Deserialization Grand Conference Wordpress Plugin Themegoods

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Re-analysis Queued

Apr 23, 2026 - 15:42 vuln.today

cvss_changed

Analysis Generated

Mar 28, 2026 - 18:42 vuln.today

CVE Published

May 19, 2025 - 20:15 nvd

CRITICAL 9.8

DescriptionCVE.org

Deserialization of Untrusted Data vulnerability in ThemeGoods Grand Conference allows Object Injection.This issue affects Grand Conference: from n/a through 5.2.

AnalysisAI

Deserialization of Untrusted Data vulnerability in ThemeGoods Grand Conference allows Object Injection.2. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Deserialization of Untrusted Data (CWE-502), which allows attackers to execute arbitrary code through malicious serialized objects. Deserialization of Untrusted Data vulnerability in ThemeGoods Grand Conference allows Object Injection.2. Affected products include: Themegoods Grand Conference. Version information: through 5.2..

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid deserializing untrusted data. Use safe serialization formats (JSON). Implement integrity checks and type allowlists.