Work quietly getting added to a sprint after it's already started, without anyone officially replanning.
Example: Sprint starts with 10 tickets; by day 3 there are 14 because stakeholders kept asking for 'just one more small thing.'
- often revealed by Burnup ChartA rising scope line on a burnup chart is one of the clearest signs scope crept mid-sprint.
- threatens Sprint GoalA sprint with a clear goal makes it easier to reject mid-sprint additions that don't serve it.