CVE-2025-6256

MediumCVSS 6.4/10Last modified Jun 17, 2026

Description

The Flex Guten plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘thumbnailHoverEffect’ parameter in all versions up to, and including, 1.2.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Metrics

CVSS 3.1 6.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Aug 6, 2025
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2025-6256: Medium severity, CVSS 6.4 | Vulnix