K2

Category - Miscellaneous

K2 is the solution for managing your content, regardless of the size of the site.


We have discovered  39,647 live websites   are using K2.

Download Lead List
[Download a sample report]


Technology usage statistics

Websites using K2:39,647 websites
Most popular in: Russia
Market position in Miscellaneous category:#28
Market penetration in Miscellaneous:0.12%
Most popular version:2.10.3

Security vulnerabilites

Known security issues associated with K2
PublishedCVETitleDomains
Jun, 2026CVE-2026-48940Joomla Extension - getk2.org - Stored-XSS in K2 extension for Joomla < 2.2636,388
Jun, 2026CVE-2026-48941Joomla Extension - getk2.org - Unauthenticated folder delete in K2 extension for Joomla < 2.2636,388
Jun, 2026CVE-2026-48942Joomla Extension - getk2.org - Stored-XSS in K2 extension for Joomla < 2.2636,388
Jun, 2026CVE-2026-48943Joomla Extension - getk2.org - Authenticated user property mass-assignment in K2 extension for Joomla < 2.2636,388
Jun, 2026CVE-2026-48944Joomla Extension - getk2.org - Exposure of sensitive files via attachment copy in K2 extension for Joomla < 2.2636,388
Jun, 2026CVE-2026-48945Joomla Extension - getk2.org - Privileged RCE vulnerability in K2 extension for Joomla < 2.2636,388
Jun, 2026CVE-2026-48946Joomla Extension - getk2.org - Privileged RCE vulnerability in K2 extension for Joomla < 2.2636,388

Technology adoption

Recent changes in K2 usage.
Websites that added K2 287
Websites that dropped K2 1,680
Websites that changed version of K2  3,150

Available Reports


Technology Information


Major Versions

  • 2.xx (62 subversions, 38,663 domains)

Website Distribution by Country

Number of websites using K2
United States4,627 websites


Russia5,204 websites
Germany3,885 websites
Italy3,651 websites
Greece1,916 websites
Spain1,646 websites
Poland1,631 websites
France1,554 websites
GB953 websites
Brazil845 websites

Website Distribution by TLD

Number of websites using K2
.com9,919 websites
.ru4,130 websites
.it2,622 websites
.de2,323 websites
.gr1,831 websites
.org1,415 websites
.pl1,216 websites
.es844 websites
.net785 websites
.cz683 websites

K2 Versions

sorted by popularity
2.10.38,120 websites
2.115,393 websites
2.7.13,680 websites
2.93,646 websites
2.83,460 websites
2.282,276 websites
2.6.91,811 websites
2.10.21,540 websites
2.6.81,373 websites
2.71,222 websites

See all K2 versions ...

Top Websites Using K2

A look at the most popular websites built with K2
DomainCountryRankContacts
litespeedtech.com United States9,148
operachaotique.com United States11,673
virtualvcp.com United States13,127
sendpulse.com Germany14,849
thefastmode.com United States16,013
htl.london GB18,250
See full domain list

Always Used together


Joomla: Total 610,572 domains found using Joomla
Category - CMS. 20,680,280 domains found using CMS

Alternative Technologies


Open Graph: Total 18,578,555 domains found using Open Graph
RSS: Total 12,728,871 domains found using RSS
HTTP/3: Total 12,336,762 domains found using HTTP/3
RSD: Total 9,978,801 domains found using RSD
pingback: Total 4,952,048 domains found using pingback
Cart Functionality: Total 4,520,953 domains found using Cart Functionality
HTTP/2: Total 4,158,742 domains found using HTTP/2
Gravatar: Total 3,021,547 domains found using Gravatar
animate.css: Total 2,972,730 domains found using animate.css
webpack: Total 2,843,022 domains found using webpack

FAQ

K2 falls under the category of Miscellaneous.
WebTechSurvey systematically indexes websites and their technologies. Users can find websites using K2 through the WebTechSurvey platform.
There are currently 57,408,501 live websites that use K2.
The main competitors to K2 include Open Graph, RSS, HTTP/3, and RSD.
K2 has a known security vulnerabilities: CVE-2026-48940, CVE-2026-48941, CVE-2026-48942, and CVE-2026-48943.