CVE-2026-2277
Received Received - Intake
Reflected XSS in rexCrawler Plugin Affects WordPress Multisites

Publication date: 2026-03-21

Last updated on: 2026-03-21

Assigner: Wordfence

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.
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Meta Information
Published
2026-03-21
Last Modified
2026-03-21
Generated
2026-06-16
AI Q&A
2026-03-21
EPSS Evaluated
2026-06-15
NVD
CVE-2026-2277
EUVD
EUVD-2026-14000
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
rexcrawler rexcrawler to 1.0.15 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

The rexCrawler plugin for WordPress has a vulnerability known as Reflected Cross-Site Scripting (XSS) in its search-pattern tester page. This vulnerability exists in the 'url' and 'regex' parameters due to insufficient input sanitization and output escaping. It allows unauthenticated attackers to inject arbitrary web scripts that can execute if an administrator is tricked into clicking a malicious link.

This vulnerability affects all versions up to and including 1.0.15 and only impacts multi-site installations or installations where the unfiltered_html setting has been disabled.

Impact Analysis

This vulnerability can allow attackers to execute arbitrary scripts in the context of an administrator's browser session. This can lead to unauthorized actions being performed, such as stealing sensitive information, hijacking sessions, or manipulating site content.

Since the attack requires tricking an administrator into clicking a malicious link, it relies on social engineering but can result in significant security breaches if successful.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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