Incident workspace
Share Accounting Drift In A Fictional Vault
A fictional vault mints shares from a stale asset balance after a fee path changes total assets without refreshing the denominator, creating a proportional-accounting failure.
Phase 1 · Fictional Content
Fictional data used to validate the TraceFi interface. This is not a real security incident.
- Incident date
- 2026-02-12
- Difficulty
- Intermediate
- Estimated learning time
- 55 minutes
Key Classification Summary
- Nature
- Exploit
- Class
- Smart Contract Implementation Bug
- Categories
- Share Accounting, Invariant Violation, Vault Design
Security Invariant
A deposit must not mint more shares than the depositor's proportional claim on current vault assets.
- Expected behavior
- The share denominator reflects the same asset state that the deposit path uses for mint calculation.
- Violated condition
- A fee settlement path changed accounted assets before the deposit denominator was refreshed.
Why This Incident Matters
This case helps learners practice reasoning about share accounting, invariant violation, vault design through one primary invariant: whether the modeled system preserves the expected relationship between assets, authority, and state.
The record is fictional prototype content, so its value is educational structure rather than real-world attribution.
Affected Or Vulnerable Components
- Aster Vale Vaults: A fictional yield vault used only to validate TraceFi's dossier and Learn Mode interface.
- Primary class: Smart Contract Implementation Bug
- Code surface: Fictional stale denominator share mint
Replay Availability
Foundry Local Reproduction is marked available. It is an executable concept only; no runner or project files are included.
Related Patterns
- Share Inflation And Proportional-accounting Failure: A vault or pool mints ownership units using an accounting denominator that no longer reflects the current asset state.
Continue The Workspace
Choose the focused route for the next task instead of scanning one long dossier page.