CVE-2026-1573: OMIGO <= 3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 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: 2026-02-07 · updated 2026-06-17
Weakness: CWE-79

Description

The OMIGO plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `omigo_donate_button` shortcode in all versions up to, and including, 3.3 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

omi-mexico OMIGO: through 3.3

References

https://plugins.trac.wordpress.org/browser/omigo/trunk/omigo.php?rev=2778497#L386
https://www.wordfence.com/threat-intel/vulnerabilities/id/f2cf46e6-a732-45c4-ad18-607009d7a586?source=cve

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