CVE-2026-3876: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in specialk Prismatic
The Prismatic WordPress plugin up to version 3. 7. 3 contains a stored cross-site scripting (XSS) vulnerability via the 'prismatic_encoded' pseudo-shortcode. This vulnerability arises from insufficient input sanitization and output escaping in the 'prismatic_decode' function, allowing unauthenticated attackers to inject arbitrary scripts through crafted comments. These scripts execute when users access the affected pages. The vulnerability has a high severity with a CVSS score of 7. 2. No official patch or remediation guidance is currently available, and no known exploits in the wild have been reported.
AI Analysis
Technical Summary
CVE-2026-3876 is a stored cross-site scripting vulnerability in the Prismatic plugin for WordPress, present in all versions up to and including 3.7.3. The issue stems from improper neutralization of user-supplied input within the 'prismatic_decode' function, specifically in handling the 'prismatic_encoded' pseudo-shortcode. This allows unauthenticated attackers to inject malicious scripts into comments, which execute when other users view the affected pages. The vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 7.2, indicating high severity. There is no vendor advisory or patch currently available.
Potential Impact
Successful exploitation allows unauthenticated attackers to inject and execute arbitrary JavaScript in the context of users viewing the affected WordPress pages. This can lead to information disclosure, session hijacking, or other client-side impacts. The vulnerability does not affect availability and requires no privileges or user interaction to exploit beyond viewing the injected content.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should consider disabling or removing the Prismatic plugin or implementing web application firewall (WAF) rules to block malicious payloads targeting the 'prismatic_encoded' shortcode. Monitoring for suspicious comment submissions and applying manual input filtering may reduce risk but are not complete mitigations.
CVE-2026-3876: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in specialk Prismatic
Description
The Prismatic WordPress plugin up to version 3. 7. 3 contains a stored cross-site scripting (XSS) vulnerability via the 'prismatic_encoded' pseudo-shortcode. This vulnerability arises from insufficient input sanitization and output escaping in the 'prismatic_decode' function, allowing unauthenticated attackers to inject arbitrary scripts through crafted comments. These scripts execute when users access the affected pages. The vulnerability has a high severity with a CVSS score of 7. 2. No official patch or remediation guidance is currently available, and no known exploits in the wild have been reported.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3876 is a stored cross-site scripting vulnerability in the Prismatic plugin for WordPress, present in all versions up to and including 3.7.3. The issue stems from improper neutralization of user-supplied input within the 'prismatic_decode' function, specifically in handling the 'prismatic_encoded' pseudo-shortcode. This allows unauthenticated attackers to inject malicious scripts into comments, which execute when other users view the affected pages. The vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 7.2, indicating high severity. There is no vendor advisory or patch currently available.
Potential Impact
Successful exploitation allows unauthenticated attackers to inject and execute arbitrary JavaScript in the context of users viewing the affected WordPress pages. This can lead to information disclosure, session hijacking, or other client-side impacts. The vulnerability does not affect availability and requires no privileges or user interaction to exploit beyond viewing the injected content.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should consider disabling or removing the Prismatic plugin or implementing web application firewall (WAF) rules to block malicious payloads targeting the 'prismatic_encoded' shortcode. Monitoring for suspicious comment submissions and applying manual input filtering may reduce risk but are not complete mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-10T11:04:56.076Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e08ce482d89c981f5edf24
Added to database: 4/16/2026, 7:16:52 AM
Last enriched: 4/16/2026, 7:31:59 AM
Last updated: 4/16/2026, 8:35:54 AM
Views: 5
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