CVE-2025-3661: SB Chart block <= 1.2.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via className Parameter

6.4 CVSS

Description

The SB Chart block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in all versions up to, and including, 1.2.6 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.

Classification

CVE ID: CVE-2025-3661

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.4

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

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Vendor: bobbingwide

Product: SB Chart block

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3661
https://www.wordfence.com/threat-intel/vulnerabilities/id/f6afe4b6-c38c-46fa-82d5-95cb35c2c30f?source=cve
https://plugins.trac.wordpress.org/browser/sb-chart-block/trunk/sb-chart-block.php#L104
https://wordpress.org/plugins/sb-chart-block/#developers
https://plugins.trac.wordpress.org/changeset/3276462/

Timeline