AnchorScan conducted a comprehensive pre-audit security assessment of LampPost Slots v4, a Solana-based smart contract implementing a bidding and escrow system for job management. Our analysis examined 8 potential vulnerabilities across critical functions including bid management, fund distribution, and time-based controls. The assessment revealed that while the majority of identified concerns are mitigated by Anchor framework protections or represent intended design decisions, two confirmed issues require attention before mainnet deployment.
The contract demonstrates solid architectural foundations with appropriate use of Anchor's security features. However, our analysis identified one medium-severity issue related to unauthorized manipulation of auto-release timelines that could impact client protections, and one low-severity precision loss vulnerability in fund distribution calculations. These findings, while not immediately exploitable for significant financial gain, represent design flaws that could affect user experience and contract integrity over time.
The overall security posture is promising, with most attack vectors effectively neutralized by the Anchor framework's built-in protections. We recommend addressing the identified medium-severity timeline manipulation issue and implementing the suggested precision handling improvements before proceeding to formal audit and mainnet deployment.
Our methodology included automated vulnerability detection, manual code review, attack vector analysis, and Anchor framework interaction assessment. Each finding was verified against Solana runtime behavior and Anchor's security model to eliminate false positives and focus on genuine security concerns.
| Severity Level | Count | CVSS Range | Status |
|---|---|---|---|
| Critical | 0 | 9.0 - 10.0 | ✅ None Found |
| High | 0 | 7.0 - 8.9 | ✅ None Found |
| Medium | 1 | 4.0 - 6.9 | ⚠️ Requires Fix |
| Low | 1 | 0.1 - 3.9 | 📝 Recommended |
The request_review function allows developers to unilaterally modify the auto-release timestamp after submitting deliverables, potentially shortening the client's originally agreed review time without consent. This creates an unfair advantage where developers can pressure clients into rushed approvals.
Medium Risk: Developers can manipulate timing to pressure clients into rushed approvals or force auto-release of full job amounts (potentially thousands of SOL).
Integer division in dispute resolution calculations can result in small amounts (dust) being permanently locked in job accounts. While the financial impact is negligible per transaction, it represents imperfect fund accounting.
Negligible: Maximum loss is <1 lamport per dispute resolution due to u64/basis point precision limits.
Our analysis identified 6 potential issues that were ultimately determined to be false positives:
While the contract demonstrates strong security foundations, the medium-severity timeline manipulation issue must be addressed before proceeding to formal audit and mainnet deployment.
This pre-audit report is provided by AnchorScan for informational purposes and represents our professional assessment based on the code review conducted on April 03, 2026. This analysis does not guarantee the absence of vulnerabilities and should not be considered a substitute for a comprehensive formal security audit. The smart contract space involves inherent risks, and users should conduct their own due diligence. AnchorScan assumes no responsibility for any financial losses or damages that may occur from the use of the audited contract. This report is confidential and intended solely for the contracting party.