{
  "id": 12899374,
  "title": "Flash Loan Attack Vector Analysis: Sky Lending",
  "url": "https://urgent.news/2026/10/08/flash-loan-attack-vector-analysis-sky-lending",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-08T15:57:35.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/dannydoes_2abdf9c/flash-loan-attack-vector-analysis-sky-lending-4djd"
  },
  "original_language": "en",
  "account": "Sky Lending is a high-throughput lending protocol deployed on Ethereum and multiple L2 roll-ups, with a total value locked (TVL) of approximately $5.9 billion. Analysts have identified five key attack vectors related to flash loans that could pose significant risks to the protocol.\n\nFirst, oracle price manipulation via flash loan-driven token swaps presents a high-moderate risk. By initiating a flash loan and manipulating the price of a stablecoin on a low-liquidity DEX, an attacker can create an under-collateralized loan on Sky Lending. This could lead to the loss of up to 30% of the protocol's TVL in a single transaction.\n\nSecond, re-entrancy through the withdrawRewards() callback also poses a high-moderate risk. By exploiting the Checks-Effects-Interactions pattern in the reward token's implementation, an attacker could create a malicious contract that repeatedly calls the withdrawRewards() function, potentially draining up to $150 million in reward tokens and inflating the attacker's governance voting power.\n\nThird, a cross-L2 bridge race condition could temporarily create \"ghost\" liquidity on Layer 2, allowing under-collateralized borrowing. This medium-moderate risk arises when an attacker leverages a flash loan on Layer 1 to deposit assets into the L2 bridge, then opens a borrowing position on the L2 instance of Sky Lending before the bridge's finalization on Layer 2.\n\nFourth, liquidation-triggered flash loan sandwich attacks present a high-moderate risk. By monitoring pending liquidation calls and front-running them with a flash loan, an attacker can manipulate the collateral price and capture the liquidation bonus while the borrower's position remains healthy.\n\nLastly, a reward-distribution \"snapshot\" manipulation low-moderate risk could result in minor inflation of reward tokens (around 0.5% of the total supply). This attack could be used to create reputational risk for the protocol but is unlikely to cause significant financial harm.",
  "summary": "Flash Loan Attack Vector Analysis: Sky Lending Target Protocol : Sky Lending (TVL: $5905.6M) Sky Lending – Flash‑Loan Attack Vector Analysis Technical Security & Audit Report Prepared by: [Your Firm – Senior DeFi Security Research Team] Date: 8 Oct 2026 1. Executive Summary Sky Lending is a high‑throughput, permission‑less lending protocol deployed on Ethereum and multiple L2 roll‑ups (Optimism,…",
  "key_points": [
    "Oracle price manipulation via flash loans poses high-moderate risk to Sky Lending protocol.",
    "Re-entrancy in withdrawRewards() callback could drain up to $150 million in reward tokens.",
    "Cross-L2 bridge race condition creates ghost liquidity, enabling under-collateralized borrowing."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "Dev.to",
        "title": "Flash Loan Attack Vector Analysis: Robinhood",
        "url": "https://urgent.news/2026/10/08/flash-loan-attack-vector-analysis-robinhood",
        "published": "2026-10-08T22:25:54.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}