Medium severity · published Sep 3, 2026
CVE-2026-2573
GutenKit <= 2.4.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'postBodyCss'
6.4
CVSS
0.3%
EPSS
No
On KEV
Description
The GutenKit – Page Builder Blocks, Patterns, and Templates for Gutenberg Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘postBodyCss’ parameter in all versions up to, and including, 2.4.4 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:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GP
GutenKit – Page Builder Blocks, Patterns, and Templates for Gutenberg Block Editor · ataurr
through 2.4.4 · source: vendor
Affected product
GP
GutenKit – Page Builder Blocks, Patterns, and Templates for Gutenberg Block Editor
ataurr
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2573
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2573
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3468273/gutenkit-blocks-addon
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/7e94cbf8-c74a-4546-83de-b5c5b094762b?source=cve
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