CVE-2026-39575
DOM-Based XSS in Custom Query Blocks ≤ 5.5.0 Allows Code Injection
Publication date: 2026-04-08
Last updated on: 2026-04-10
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ronald_huereca | custom_query_blocks | to 5.5.0 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a type of Cross-site Scripting (XSS) known as DOM-Based XSS. It occurs in the Ronald Huereca Custom Query Blocks plugin, specifically in the post-type-archive-mapping feature. The issue arises because the plugin improperly neutralizes input during web page generation, allowing malicious scripts to be injected and executed in the user's browser.
How can this vulnerability impact me? :
This vulnerability can allow attackers to execute malicious scripts in the context of the affected website. This can lead to unauthorized actions such as stealing user session cookies, defacing the website, redirecting users to malicious sites, or performing actions on behalf of the user without their consent.