element-hq / element-hq/synapse

It is possible to set a stupidly long displayname

Open
#5,079 0 comments 0 reactions 0 assignees View on GitHub
A-Membership A-Validation P4 S-Tolerable Security T-Defect
Dominant language
Python
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Description

This issue has been migrated from [#5079](https://github.com/matrix-org/synapse/issues/5079).

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... which then prevents you from being invited to rooms, as well as probably all manner of other DoS activities.

Contributor guide

Open the contributing guide

Research direction

The issue names no files, tests, or entry points. Start by locating display-name handling and the invitation failure, then determine the intended length limit and add regression coverage for the reported behavior; the expected handling and protection against related DoS risks still need clarification.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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