What’s Vulnerable › Vulnerabilities

CVE-2026-0913: User Submitted Posts <= 20260110 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'usp_access' Shortcode

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-16 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• specialk User Submitted Posts – Enable Users to Submit Posts from the Front End: through 20260110

References

• https://plugins.trac.wordpress.org/browser/user-submitted-posts/tags/20251210/library/shortcode-access.php#L20
• https://plugins.trac.wordpress.org/changeset/3439027/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/85bf7a1b-3c54-40c9-8f19-fcb9dd478a0e?source=cve

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