Vulnerability · Published Mar 21, 2026 · Assigned by Wordfence
CVE-2026-2277rexCrawler <= 1.0.15 - Reflected Cross-Site Scripting via 'url' and 'regex' Parameters
Medium 6.1
In plain English
A medium-severity cross-site scripting in rexCrawler from larsdrasmussen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| larsdrasmussen | rexCrawler | 0 – through 1.0.15 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2a17f466-bc4b-4668-8ff9-e8b316e3b5b7?source=cve
- https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php#L25
- https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_test.php#L25
- https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php#L29
- https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_test.php#L29