CVE-2025-13856

MEDIUM 6.4

Extra Post Images <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	michaelcole1991
Product	extra post images
Published	Dec 6, 2025
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

michaelcole1991 / Extra Post Images

0 ≤ 1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/c5fbb963-f89d-4037-9456-8587bcf5d620?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/extra-post-images/trunk/epi.php#L92 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/extra-post-images/tags/1.0/epi.php#L92 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/extra-post-images/tags/1.0/epi.php#L101

Credits

Gilang Asra Bilhadi