CVE-2017-2171: Bestwebsoft Captcha

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

Cross-site scripting vulnerability in Captcha prior to version 4.3.0, Car Rental prior to version 1.0.5, Contact Form Multi prior to version 1.2.1, Contact Form prior to version 4.0.6, Contact Form to DB prior to version 1.5.7, Custom Admin Page prior to version 0.1.2, Custom Fields Search prior to version 1.3.2, Custom Search prior to version 1.36, Donate prior to version 2.1.1, Email Queue prior to version 1.1.2, Error Log Viewer prior to version 1.0.6, Facebook Button prior to version 2.54, Featured Posts prior to version 1.0.1, Gallery Categories prior to version 1.0.9, Gallery prior to version 4.5.0, Google +1 prior to version 1.3.4, Google AdSense prior to version 1.44, Google Analytics prior to version 1.7.1, Google Captcha (reCAPTCHA) prior to version 1.28, Google Maps prior to version 1.3.6, Google Shortlink prior to version 1.5.3, Google Sitemap prior to version 3.0.8, Htaccess prior to version 1.7.6, Job Board prior to version 1.1.3, Latest Posts prior to version 0.3, Limit Attempts prior to version 1.1.8, LinkedIn prior to version 1.0.5, Multilanguage prior to version 1.2.2, PDF & Print prior to version 1.9.4, Pagination prior to version 1.0.7, Pinterest prior to version 1.0.5, Popular Posts prior to version 1.0.5, Portfolio prior to version 2.4, Post to CSV prior to version 1.3.1, Profile Extra prior to version 1.0.7. PromoBar prior to version 1.1.1, Quotes and Tips prior to version 1.32, Re-attacher prior to version 1.0.9, Realty prior to version 1.1.0, Relevant - Related Posts prior to version 1.2.0, Sender prior to version 1.2.1, SMTP prior to version 1.1.0, Social Buttons Pack prior to version 1.1.1, Subscriber prior to version 1.3.5, Testimonials prior to version 0.1.9, Timesheet prior to version 0.1.5, Twitter Button prior to version 2.55, User Role prior to version 1.5.6, Updater prior to version 1.35, Visitors Online prior to version 1.0.0, and Zendesk Help Center prior to version 1.0.5 allows remote attackers to inject arbitrary web script or HTML via the function to display the BestWebSoft menu.

Affected products

• Bestwebsoft Captcha: up to and including 4.2.9
• Bestwebsoft Car Rental: up to and including 1.0.4
• Bestwebsoft Contact Form: up to and including 4.0.5
• Bestwebsoft Contact Form Multi: up to and including 1.2.0
• Bestwebsoft Contact Form To DB: up to and including 1.5.6
• Bestwebsoft Custom Admin Page: up to and including 0.1.1
• Bestwebsoft Custom Fields Search: up to and including 1.3.1
• Bestwebsoft Custom Search: up to and including 1.35
• Bestwebsoft Donate: up to and including 2.1.0
• Bestwebsoft Email Queue: up to and including 1.1.1
• Bestwebsoft Error Log Viewer: up to and including 1.0.5
• Bestwebsoft Facebook Button: up to and including 2.53
• Bestwebsoft Featured Posts: up to and including 1.0.0
• Bestwebsoft Gallery: up to and including 4.4.9
• Bestwebsoft Gallery Categories: up to and including 1.0.8
• Bestwebsoft Google +1: up to and including 1.3.3
• Bestwebsoft Google Adsense: up to and including 1.43
• Bestwebsoft Google Analytics: up to and including 1.7.0
• Bestwebsoft Google Captcha (recaptcha): up to and including 1.27
• Bestwebsoft Google Maps: up to and including 1.3.5
• Bestwebsoft Google Shortlink: up to and including 1.5.2
• Bestwebsoft Google Sitemap: up to and including 3.0.7
• Bestwebsoft Htaccess: up to and including 1.7.5
• Bestwebsoft Job Board: up to and including 1.1.2
• Bestwebsoft Latest Posts: up to and including 0.2
• and 26 more

Published 2017-05-22. Last modified 2026-06-17.