CVE-2026-19943mediumCWE-79

CVE-2026-19943: fallo de gravedad media en jegstudio Gutenverse – WordPress Blocks, Page…

Gutenverse <= 4.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'titleTag' Block Attribute

Publicada el 25 ago 2026

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.4epss 0.3%

probabilidad de explotación

0.3%top 72% de las CVE

explotación observada

noninguna fuente lo reporta

The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'titleTag' Block Attribute in all versions up to, and including, 4.0.2 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. The malicious titleTag value survives wp_kses_post on save because it is stored inside a block-comment delimiter and the live HTML is only synthesized at render time by do_blocks(), meaning the payload also fires in administrator and editor sessions during post preview.

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

Productos afectados

jegstudio · Gutenverse – WordPress Blocks, Page Builder & Site Editor

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CVE-2026-3001MEDIUMGutenverse <= 3.4.6 - Reflected Cross-Site Scripting via 's' ParameterEPSS 0.5%CVE-2026-12399MEDIUMGutenverse <= 3.8.0 - Authenticated (Editor+) Stored Cross-Site Scripting via 'fonts[].font.font.value' ParameterEPSS 0.4%CVE-2026-3002MEDIUMGutenverse <= 4.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple BlocksEPSS 0.3%CVE-2026-92746MEDIUMGutenverse <= 4.0.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Comment Block 'suffixMain' AttributeEPSS 0.2%

Referencias

https://plugins.trac.wordpress.org/browser/gutenverse/tags/4.0.0/includes/block/class-chart.php#L28 https://plugins.trac.wordpress.org/browser/gutenverse/tags/4.0.0/includes/block/class-chart.php#L80 https://plugins.trac.wordpress.org/browser/gutenverse/tags/4.0.2/includes/block/class-chart.php#L28 https://plugins.trac.wordpress.org/browser/gutenverse/tags/4.0.2/includes/block/class-chart.php#L80 https://plugins.trac.wordpress.org/changeset?reponame=&old=3662715%40gutenverse&new=3662715%40gutenverse https://www.wordfence.com/threat-intel/vulnerabilities/id/b7eb4cac-cf16-438e-81cc-516646e77cdc?source=cve