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CVE-2026-6255

MEDIUM 6.4 CVSS 3.1
Published
May 5, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Simple Owl Shortcodes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'num' attribute of the 'owls_wrapper' shortcode in all versions up to, and including, 2.1.1 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 WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • sszdh Simple Owl Shortcodes — Up to and including 2.1.1

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simple-owl-shortcodes/tags/2.1.1/inc/owls_wrapper.php#L11
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simple-owl-shortcodes/trunk/inc/owls_wrapper.php#L11
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/e33a2f27-20c2-4963-9558-1eead0515690?source=cve
  • nvd.nist.gov Official NVD record