Vulnerability Description
The Microtango plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'restkey' parameter of the mt_reservation shortcode in all versions up to, and including, 0.9.29 due to insufficient input sanitization and output escaping. 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 Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/microtango/tags/0.9.29/microtango-ini
- https://plugins.trac.wordpress.org/browser/microtango/trunk/microtango-init.php#
- https://plugins.trac.wordpress.org/changeset/3455880/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/27657d29-e834-4f05-8fe
FAQ
What is CVE-2026-1821?
CVE-2026-1821 is a vulnerability with a CVSS score of 6.4 (MEDIUM). The Microtango plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'restkey' parameter of the mt_reservation shortcode in all versions up to, and including, 0.9.29 due to insuffi...
How severe is CVE-2026-1821?
CVE-2026-1821 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1821?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.