Stored Cross-Site Scripting Vulnerability in Extra Post Images Plugin for WordPress
CVE-2025-13856

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Extra Post Images
Vendor
CVE Published:
6 December 2025

What is CVE-2025-13856?

The Extra Post Images plugin for WordPress has a vulnerability in the handling of the 'id' parameter within the extra-images shortcode. This lack of proper input sanitization and output escaping allows authenticated attackers, with Contributor-level access, to inject malicious scripts. These scripts can execute whenever a user accesses a compromised page, posing significant risks to website integrity and user safety.

Affected Version(s)

Extra Post Images * <= 1.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/extra-post-ima...
https://plugins.trac.wordpress.org/browser/extra-post-ima...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gilang Asra Bilhadi
JSON
.
CVE-2025-13856 : Stored Cross-Site Scripting Vulnerability in Extra Post Images Plugin for WordPress