CVE-2025-13856
Extra Post Images <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
- State
- Published
- Severity
- 6.4 Medium
- Published
- Dec 6, 2025
- Updated
- Apr 8, 2026
- Reserved
- Dec 1, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Extra Post Imagesmichaelcole1991 |
|
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
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.