CVE-2026-9601mediumCWE-79

CVE-2026-9601: medium-severity vulnerability in bfintal Stackable – Page Builder Gutenberg…

Stackable <= 3.19.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'save' Parameter

Published 07 Nov 2026

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.4epss 0.3%

The Stackable – Page Builder Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'update_block_style' endpoint in all versions up to, and including, 3.19.9 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.

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

Affected products

bfintal · Stackable – Page Builder Gutenberg Blocks

Related CVEs — bfintal Stackable – Page Builder Gutenberg…

In the same product, most dangerous first.

CVE-2024-6296MEDIUMStackable – Page Builder Gutenberg Blocks <= 3.13.1 - Authenticated (Contributor+) DOM-Based Stored Cross-Site ScriptingEPSS 0.5%CVE-2024-2039MEDIUMStackable – Page Builder Gutenberg Blocks <= 3.12.11 - Authenticated(Contributor+) Stored Cross-Site Scripting via Posts BlockEPSS 0.4%CVE-2022-4974MEDIUMFreemius SDK <= 2.4.2 - Missing Authorization ChecksEPSS 0.4%CVE-2024-8760MEDIUMStackable – Page Builder Gutenberg Blocks <= 3.13.6 - Unauthenticated CSS InjectionEPSS 0.4%CVE-2024-12117MEDIUMStackable – Page Builder Gutenberg Blocks <= 3.13.11 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.3%

References