CVE-2026-1569: Wueen <= 0.2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Plugin's Shortcode

Severity: medium (CVSS 6.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-07 · updated 2026-06-17
Weakness: CWE-79

Description

The Wueen plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `wueen-blocket` shortcode in all versions up to, and including, 0.2.0 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

nabeghe Wueen: through 0.2.0

References

https://plugins.trac.wordpress.org/browser/wueen/tags/0.2.0/wueen.php#L150
https://www.wordfence.com/threat-intel/vulnerabilities/id/38e5dd9e-c017-4b4c-9064-76a07e30fab5?source=cve

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