PT-2026-26829 · WordPress · Rexcrawler

San6051 · Published 2026-03-21 · Updated 2026-03-21 · CVE-2026-2277

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions rexCrawler plugin for WordPress versions prior to 1.0.16

Description The rexCrawler plugin for WordPress is susceptible to Reflected Cross-Site Scripting through the url and regex parameters within the search-pattern tester page. Insufficient input sanitization and output escaping allow unauthenticated attackers to inject arbitrary web scripts. Successful exploitation requires tricking an administrator into performing an action, such as clicking a malicious link. This issue specifically impacts multi-site installations and those where unfiltered html has been disabled.

Recommendations Update the rexCrawler plugin to version 1.0.16 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-2277

Affected Products

Rexcrawler

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-2277 · Security Note
• https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_test.php#L25 · Note
• https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php#L29 · Note
• https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php#L25 · Note
• https://twitter.com/CVEnew/status/2035237298712060199 · Twitter Post
• https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_test.php#L29 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/2a17f466-bc4b-4668-8ff9-e8b316e3b5b7?source=cve · Note