Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/changeset?old_path=/prismatic/tags/3.7.3/inc/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/aa4e18b0-f871-4476-af9
FAQ
What is CVE-2026-3876?
CVE-2026-3876 is a vulnerability with a CVSS score of 7.2 (HIGH). 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 in...
How severe is CVE-2026-3876?
CVE-2026-3876 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3876?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.