Project Summary
MediaWiki wikis allow users to customise the JavaScript and CSS of the wiki via code contained in JS/CSS wiki pages under their own profile or in the protected "MediaWiki" namespace, where they can also be enabled for all users.
The most commonly used among these so called "user scripts" are often promoted by sysops into fine-grained "gadgets", that is they can be easily enabled by any user of the same wiki in their preferences or they can be made default for everyone. On Wikimedia projects alone, thousands gadgets exist. The VCS for all this code is generally MediaWiki itself, often with hundreds (unintentional) forks of a single gadget.
See for instance a list of Wikipedia gadgets: https://meta.wikimedia.org/wiki/Gadgets/wikipedia Some more examples in the links section.
Badges
In a Nutshell, MediaWiki wikis user scripts and gadgets...
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has a well established, mature codebase
maintained by a small development team
with increasing Y-O-Y commits -
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took an estimated 1 years of effort (COCOMO model)
starting with its first commit in August, 2012
ending with its most recent commit 4 months ago
Quick Reference
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryJul 30 2026 — Aug 29 2026
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12 Month SummaryAug 29 2025 — Aug 29 2026
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