Extra Post Images <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Vulnerability Description
The Extra Post Images plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' parameter of the extra-images shortcode in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Gilang Asra Bilhadi
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c5fbb963-f89d-4037-9456-8587bcf5d620?source=cve
- https://plugins.trac.wordpress.org/browser/extra-post-images/trunk/epi.php#L92
- https://plugins.trac.wordpress.org/browser/extra-post-images/tags/1.0/epi.php#L92
- https://plugins.trac.wordpress.org/browser/extra-post-images/tags/1.0/epi.php#L101
Affected Vendor
michaelcole1991
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