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Legacy scores
CHALLENGES—120 bugs · 21 challenges · 3 apps

Hunt the bugs. Score the reports.

Each challenge points you at a broken surface in a playground: file a bug report and get graded.

New — hunt by bug type: pick the bug, then the app →

PLAYGROUND
TYPE
DIFF
#TitlePlaygroundDifficultySeverityGlobal %Score
01
Legacy Shop: Product Listing Bugs
uilistingdata
Legacy
Easy— in plain sightMED
32%
—
02
Find the stale cart count
stateui
Legacy
Easy— in plain sightHIGH
100%
—
03
Auth endpoint accepts invalid credentials
contractsecurity
Legacy
Medium— bring toolsHIGH——
04
Order history sorts as string
sortingdata
Legacy
Easy— in plain sightMED——
05
Cart accepts negative quantity
validation
Legacy
Easy— in plain sightHIGH——
06
PRODUCT_VIEWED payload drops productId
eventspipeline
Legacy
Medium— bring toolsHIGH
100%
—
07
Price mismatch list ↔ detail
dataui
Legacy
Easy— in plain sightHIGH——
08
GET /products leaks inactive items
contractdata
Legacy
Medium— bring toolsMED
100%
—
09
Filter UI ≠ filtered results
state
Legacy
Medium— bring toolsMED——
10
ORDER_SUBMITTED on payment failure
eventsdata
Legacy
Hard— bring patienceHIGH——
11
Grid collapses early on tablet
responsive
Legacy
Easy— in plain sightLOW——
12
Card copy drifts from playground metadata
copydata
Homepage
Easy— in plain sightMED
100%
—
13
Homepage CTA fires analytics with the wrong payload
analyticsevents
Homepage
Medium— bring toolsMED——
14
QualityChart patient portal — FE bug hunt
fhirehra11y
Health
Medium— bring toolsHIGH——
15
FHIR R4 services — Interconnect bug hunt
fhirehrapi
Health
Medium— bring toolsHIGH——
16
Ambient AI note drafting — grounding bug hunt
fhirehrai
Health
Medium— bring toolsHIGH——
17
HL7 → FHIR pipeline — Bridges bug hunt
fhirehretl
Health
Medium— bring toolsHIGH——
18
TapTrust Federal client app — transfer bug hunt
transfersstateprecision
Banking
Medium— bring toolsHIGH——
19
TapTrust Federal teller console — ledger + approval bug hunt
ledgerauthzcaching
Banking
Medium— bring toolsHIGH——
20
Quality Mart checkout — pricing, tax, and coupon bug hunt
checkoutpricingdata
Retail
Medium— bring toolsHIGH——
21
Quality Mart cart & orders — concurrency and authorization bug hunt
cartauthzstate
Retail
Medium— bring toolsHIGH——