Medium severity · published Jan 16, 2026
CVE-2026-0913
User Submitted Posts <= 20260110 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'usp_access' Shortcode
6.4
CVSS
0.3%
EPSS
No
On KEV
Description
The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'usp_access' shortcode in all versions up to, and including, 20260110 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
US
User Submitted Posts – Enable Users to Submit Posts from the Front End · specialk
through 20260110 · source: vendor
Affected product
US
User Submitted Posts – Enable Users to Submit Posts from the Front End
specialk
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-0913
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0913
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/user-submitted-posts/tags/20251210/library/shortcode-access.php#L20
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3439027/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/85bf7a1b-3c54-40c9-8f19-fcb9dd478a0e?source=cve
More from User Submitted Posts – Enable Users to Submit Posts from the Front End
7.2
CVE-2026-0800
User Submitted Posts – Enable Users to Submit Posts from the Front End <= 20251210 - Unauthenticated Stored Cross-Site Scripting via Custom Field
5.3
CVE-2026-2126
User Submitted Posts <= 20260113 - Incorrect Authorization to Unauthenticated Category Restriction Bypass via 'user-submitted-category' Parameter
4.4
CVE-2025-2874
User Submitted Posts <= 20241026 - Authenticated (Admin+) Stored Cross-Site Scripting