Vulnerability Description
The rexCrawler plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'url' and 'regex' parameters in the search-pattern tester page in all versions up to, and including, 1.0.15 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick an administrator into performing an action such as clicking on a link. This only affects multi-site installations and installations where unfiltered_html has been disabled.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_te
- https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_te
- https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php
- https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2a17f466-bc4b-4668-8ff
FAQ
What is CVE-2026-2277?
CVE-2026-2277 is a vulnerability with a CVSS score of 6.1 (MEDIUM). The rexCrawler plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'url' and 'regex' parameters in the search-pattern tester page in all versions up to, and including, 1.0.15 ...
How severe is CVE-2026-2277?
CVE-2026-2277 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-2277?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.