Description

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

Classification

CVE ID: CVE-2025-39354

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

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

Affected Products

Vendor: ThemeGoods

Product: Grand Conference

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 16.91% (scored less or equal to compared to others)

EPSS Date: 2025-06-05 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-39354
https://patchstack.com/database/wordpress/plugin/grandconference/vulnerability/wordpress-grand-conference-theme-5-2-php-object-injection-vulnerability?_s_id=cve

Timeline