Description
The Content Blocks (Custom Post Widget) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘content’ parameter within the plugin's shortcode Content Block in all versions up to, and including, 3.3.5 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.
References (5)
Core 5
Core References
Scores
CVSS v3
6.4
EPSS
0.0028
EPSS Percentile
20.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
vanderwijk/Content Blocks (Custom Post Widget)
< 3.3.5
vanderwijk/content_blocks
< 3.3.6
Published
Feb 20, 2025
Tracked Since
Feb 18, 2026