Medium severity · published Jun 10, 2025
CVE-2025-2918
Ultimate Blocks – WordPress Blocks Plugin <= 3.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple widgets in all versions up to, and including, 3.3.3 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)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UB
Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor · ultimateblocks
through 3.3.3 · source: vendor
UB
Ultimate Blocks · Dotcamp
before 3.3.4 · source: NVD
Affected product
UB
Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor
ultimateblocks
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-2918
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-2918
Product
https://plugins.trac.wordpress.org/browser/ultimate-blocks/tags/3.2.9/src/blocks/content-filter/block.php#L14
Product
https://plugins.trac.wordpress.org/browser/ultimate-blocks/tags/3.2.9/src/blocks/content-toggle/block.php#L133
Product
https://plugins.trac.wordpress.org/browser/ultimate-blocks/tags/3.2.9/src/blocks/how-to/block.php#L335
Product
https://plugins.trac.wordpress.org/browser/ultimate-blocks/tags/3.2.9/src/blocks/tabbed-content/block.php#L136
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/41b2a4cc-fb23-41eb-b1a4-d793ae924d9a?source=cve
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