Medium severity · published May 18, 2024
CVE-2024-4891
Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates <= 4.5.12 - 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 ‘tagName’ parameter in versions up to, and including, 4.5.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions 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 40% 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 4.5.12 · source: vendor
EB
Essential Blocks · Wpdeveloper
before 4.5.13 · source: NVD
Affected product
GE
Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
wpdevteam
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-4891
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-4891
Product
https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/blocks/AdvancedHeading.php#L115
Patch
https://plugins.trac.wordpress.org/changeset/3087677/
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/e1bcebb3-920b-40cc-aa5c-24a1f729b28d?source=cve
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