CVE-2026-3876
Prismatic <= 3.7.3 - Unauthenticated Stored Cross-Site Scripting via 'prismatic_encoded' Pseudo-Shortcode
CVSS Score
7.2
EPSS Score
0.0%
EPSS Percentile
4th
The Prismatic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'prismatic_encoded' pseudo-shortcode in all versions up to, and including, 3.7.3. This is due to insufficient input sanitization and output escaping on user-supplied attributes within the 'prismatic_decode' function. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page by submitting a comment containing a crafted 'prismatic_encoded' pseudo-shortcode.
| CWE | CWE-79 |
| Vendor | specialk |
| Product | prismatic |
| Published | Apr 16, 2026 |
| Last Updated | Apr 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
specialk / Prismatic
0 ≤ 3.7.3
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/aa4e18b0-f871-4476-af92-42e55aabdf93?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?old_path=/prismatic/tags/3.7.3/inc/prismatic-core.php&new_path=/prismatic/tags/3.7.4/inc/prismatic-core.php
Credits
Athiwat Tiprasaharn