Medium severity · published Feb 26, 2025
CVE-2024-13803
Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates <= 5.2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting
5.4
CVSS
0.5%
EPSS
No
On KEV
Description
The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-marker’ parameter in all versions up to, and including, 5.2.3 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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GE
Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns · wpdevteam
through 5.2.3 · source: vendor
EB
Essential Blocks · Wpdeveloper
through 5.2.3 · source: NVD
Affected product
GE
Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
wpdevteam
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-13803
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-13803
Broken Link
http://localhost:1337/wp-content/plugins/essential-blocks/assets/admin/editor/editor.js
Product
https://plugins.trac.wordpress.org/changeset/3242493/
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/efdeca40-e021-478f-af75-c5566ae70735?source=cve
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