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Wiki.js vs MediaWiki

Wiki.js and MediaWiki both land on Depends.

Wiki.js

js.wiki

Depends
Confidence: Medium

Great fit if a technical person will own hosting, upgrades, and patching of a free, powerful wiki.

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Wiki.js versus MediaWiki
CompareWiki.jsMediaWiki
VerdictDependsDepends
Best forTechnical self-hostersLarge public knowledge bases
Who it's not forNon-technical teams wanting one-click setupSmall teams wanting a quick internal wiki
PrivacyMultiple public CVEs including recent authentication bypass (through 2.5.314) and privilege escalation . patch discipline is mandatory.⁷Actively maintained with a dedicated security team, but a steady stream of CVEs means prompt patching is mandatory.
Support qualityCommunity support; paid help via hostsGuess: community forums only; no vendor SLA.
Public sentimentSelf-hosters praise its power and flexibility but repeatedly flag it as heavy to run and maintain.⁵Reddit users find MediaWiki powerful but repeatedly call it too complicated and maintenance-heavy for casual users and small teams.13
Biggest gotchaRunning it well needs ongoing ops: upgrades, backups, CVE patching. Recent bypass CVEs hit older versions.⁷Multiple 2026 CVEs including auth bypass and stored XSS; patch fast.

Pick Wiki.js when

  • Technical self-hosters
  • Dev-heavy teams
  • Multi-language organizations (56 languages)
  • Budget-conscious docs teams

When Wiki.js is not a fit

  • Non-technical teams wanting one-click setup
  • Startups with nobody to run a server
  • Anyone needing vendor SLA support
  • Set-and-forget admins . maintenance never ends

Pick MediaWiki when

  • Large public knowledge bases
  • Fandom-style community wikis
  • Docs-heavy orgs with a wiki admin
  • Open-source documentation projects

When MediaWiki is not a fit

  • Small teams wanting a quick internal wiki
  • Non-technical users without a server admin
  • Anyone wanting Notion-style modern editing
  • Teams that won't patch CVEs promptly

Sources

  1. Wiki.js official sitejs.wiki
    official
  2. requarks/wiki on GitHubgithub.com
    official
  3. Wiki.js permissions docsdocs.requarks.io
    official
  4. G2 reviews . Wiki.jsg2.com
    review
  5. Reddit . I love WikiJS but it's too heavyreddit.com
    review
  6. Reddit . BookStack vs Wiki.jsreddit.com
    review
  7. Rapid7 . CVE-2026-92776rapid7.com
    security
  8. SentinelOne . CVE-2026-44224sentinelone.com
    security
  9. Hossted . password reset vulnerabilityhossted.com
    security
  10. HostAdvice . Wiki.js hosting pricinghostadvice.com
    review
  11. Elestio . managed Wiki.jselest.io
    official
  12. Localazy case study . 56 languageslocalazy.com
    news
  13. Why so complicated for the casual user to manage? . Redditreddit.com
    review
  14. Someone please create a modern alternative to MediaWiki . Redditreddit.com
    review
  15. How much effort is the set up and maintenance for media wiki? . Redditreddit.com
    review
  16. MediaWiki Reviews . G2g2.com
    review