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Fencer Intel
medium 6.1

CVE-2017-2171 json

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 versio…

published 2017-05-22 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11354

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

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.

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • BestWebSoft Captcha
  • BestWebSoft Car Rental
  • BestWebSoft Contact Form Multi
  • BestWebSoft Contact Form
  • BestWebSoft Contact Form to DB
  • BestWebSoft Custom Admin Page
  • BestWebSoft Custom Fields Search
  • BestWebSoft Custom Search
  • BestWebSoft Donate
  • BestWebSoft Email Queue
  • BestWebSoft Error Log Viewer
  • BestWebSoft Facebook Button
  • BestWebSoft Featured Posts
  • BestWebSoft Gallery Categories
  • BestWebSoft Gallery
  • BestWebSoft Google +1
  • BestWebSoft Google AdSense
  • BestWebSoft Google Analytics
  • BestWebSoft Google Captcha (reCAPTCHA)
  • BestWebSoft Google Maps
  • BestWebSoft Google Shortlink
  • BestWebSoft Google Sitemap
  • BestWebSoft Htaccess
  • BestWebSoft Job Board
  • BestWebSoft Latest Posts
  • BestWebSoft Limit Attempts
  • BestWebSoft LinkedIn
  • BestWebSoft Multilanguage
  • BestWebSoft PDF & Print
  • BestWebSoft Pagination
  • BestWebSoft Pinterest
  • BestWebSoft Popular Posts
  • BestWebSoft Portfolio
  • BestWebSoft Post to CSV
  • BestWebSoft Profile Extra
  • BestWebSoft PromoBar
  • BestWebSoft Quotes and Tips
  • BestWebSoft Re-attacher
  • BestWebSoft Realty
  • BestWebSoft Relevant - Related Posts
  • BestWebSoft Sender
  • BestWebSoft SMTP
  • BestWebSoft Social Buttons Pack
  • BestWebSoft Subscriber
  • BestWebSoft Testimonials
  • BestWebSoft Timesheet
  • BestWebSoft Twitter Button
  • BestWebSoft User Role
  • BestWebSoft Updater
  • BestWebSoft Visitors Online

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
  • CWE-91 XML Injection
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.