CVE-2026-2277
Reflected XSS in rexCrawler Plugin Affects WordPress Multisites
Publication date: 2026-03-21
Last updated on: 2026-03-21
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| rexcrawler | rexcrawler | to 1.0.15 (inc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
Can you explain this vulnerability to me?
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.