Wikimedia's Bugzilla installation is used to track problem reports and feature requests related to MediaWiki code, other Wikimedia-specific components (such as extensions or tools), and Wikimedia wikis (such as Wikipedia).
Sorting and solving bug reports is a collaborative effort by users and developers of the community together with Wikimedia's bugwrangler.
Activity scope 
Bug management is a perennial activity. Anyone can contribute! Activities include:
- coordinating, triaging, and organizing the current bug reports in Bugzilla
- writing documentation for bug management
- coordinating MediaWiki deployments
- consider developing a friendly way (perhaps an extension) to allow Wikipedia users to report problems and record them in Bugzilla
Note that this is work in progress.
For Bug Reporters 
For Module Maintainers 
For Developers 
For Triagers / Bugsquad Community 
- Project:WikiProject Bug Squad
- Triage: Definition of "triaging" and information on bug triage sessions
- Triage guide: How you can help to improve bug reports, and tools to save time triaging
- Easy tasks and entry points to start triaging in Bugzilla
- Bugsquad meeting / Bugday preparations
- Places (Village Pumps, forums) to regularly check for bug reports
- List of upstream bugtrackers and URLs
For Bugzilla Administrators / the Bugwrangler 
- Admins: Please file a report when changing products/components/keywords to avoid work duplication and entropy and to understand reasonings. This excludes trivial changes like component descriptions or assignees/CC lists.
- Status updates of the Bugwrangler (Note: The bugwrangler is employed by the Wikimedia Foundation to do bug management, see scope above)
- Plans and ideas of things to do in bug management - help welcome!
- TODO: Instructions on how to create new products/components in Bugzilla
- TODO: Document Bugzilla and/vs. RT
- Technical information on our Bugzilla instance
- Andre Klapper keeps an eye on upstream Bugzilla security updates, Daniel Zahn helps deploying them.
For everybody (General / Misc) 
- An introduction to Bug report management in Wikipedia
- Bug report life cycle: The status changes of bug reports, from reporting to closing them.
- Fields in the Bugzilla interface
- TODO: Bug management/Bug access restrictions: When and why some reports (often Security issues) have restricted access
- Workflow: Proposal for a new workflow on problem entry that would lead the user to OTRS, RT, or Bugzilla as appropriate