CVE-2026-3876
Stored XSS in WordPress Prismatic Plugin via prismatic_encoded Shortcode
Publication date: 2026-04-16
Last updated on: 2026-04-16
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| prismatic | prismatic | to 3.7.3 (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?
The Prismatic plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in all versions up to and including 3.7.3. This vulnerability arises because the plugin does not properly sanitize or escape user-supplied input within the 'prismatic_decode' function, specifically related to the 'prismatic_encoded' pseudo-shortcode.
An unauthenticated attacker can exploit this by submitting a comment containing a crafted 'prismatic_encoded' pseudo-shortcode that injects arbitrary web scripts. These scripts then execute whenever any user accesses the page containing the injected comment.
How can this vulnerability impact me? :
This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users, potentially leading to theft of user credentials, session hijacking, or unauthorized actions performed on behalf of users.
Because the attack can be performed by unauthenticated users and affects all visitors to the injected page, it poses a significant security risk to website users and administrators.