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How Curve Survived Crypto's Most Severe Flash Crash: A Deep Dive into October 10th

The crypto market has weathered many storms, but October 10, 2025 stands out as the most severe and rapid liquidation event in recorded history. Market data shows that the flash crash triggered unprecedented liquidation volumes across the crypto space. Within hours, cascading liquidations swept through leveraged positions as prices plummeted faster than many protective mechanisms could react.

Source: coinglass.com

For Curve Finance and its lending ecosystem, this became the ultimate trial, putting its architecture and risk control mechanisms to the test. Under extreme market pressure, Curve’s infrastructure held firm — the impact from the washout was significant but manageable.

A total of $30.34 million in debt positions were liquidated across 118 positions on both Mint Markets and LlamaLend. By comparison, out of $235 million in total outstanding debt before the event, $196 million stood healthy by October 11th, proving that the majority of Curve’s borrowers survived the storm of volatility and emerged intact.
The results revealed not only how well-built Curve’s infrastructure was, but also valuable lessons for the future of DeFi resilience.

How Curve's liquidation protection mechanism saved the day

Curve Finance boasts a unique approach to liquidations, designed to protect borrowers during typical market conditions. This time, the system faced its toughest challenge to-date, but it was created diligently enough to be able to weather even that pressure.

When markets plunge, the liquidation protection mechanism automatically moves positions into a “protective zone,” where collateral is partially converted to crvUSD (Curve’s stablecoin token), giving borrowers a chance to recover if prices rebound.

Liquidation protection data from October 11-12th, according to Curve’s dashboard

During the October 10 market crash, approximately 22% of positions that risked full liquidation were saved by this mechanism. Although this is lower than the 44% saved during the August 5 downturn, the key difference lay in the unprecedented speed of October’s events and the abnormal gas costs on the Ethereum mainnet. The elevated gas prices forced arbitrage bots to convert collateral at deeper discounts, which in turn rapidly deteriorated loan health and triggered aggressive liquidations.

Still, the data revealed an important insight: Curve's gas-efficient liquidation protection system outperforms traditional one-by-one liquidation methods because it can process multiple positions within the same price range at once. Even more importantly, this setup fundamentally changes how liquidations work. Instead of closing positions permanently, Curve’s design allows reversible liquidations, where part of the collateral is temporarily converted into crvUSD to stabilize the loan.

If markets recover, those positions can automatically return to health without full liquidation. This ability to pause rather than destroy positions outright proved crucial during the crash, helping prevent even deeper losses across the platform.

One notable detail is that 72% of all liquidations came from a single address, which at the time of the crash held highly risky positions with an average health factor below 5%. Yet even at such low health level, part of that position remained protected thanks to the Curve’s safeguards.

That said, it is crucial to point out that the protocol cannot absorb all risks on its own. No matter how sophisticated the liquidation protection system may be, it is not a replacement for users exercising their own judgment. Borrowers must independently choose the safest parameters and respond promptly to any increase in risk.

crvUSD: A Stablecoin With Battle-Tested Stability

Despite massive liquidations across the ecosystem, crvUSD managed to hold its ground, maintained its peg with only minimal fluctuations. That made October 10 not just a stress test for Curve’s lending protocol, but for its native stablecoin, as well. A test it passed with distinction.

CRVUSD
The resilience of crvUSD stood in stark contrast to issues faced by other stablecoins during the crash. Particularly, USDe performance on centralized exchanges like Binance saw visible instability.

USDe

Curve DEX: Delivering Stability as Expected
While most of the attention had been focused on lending liquidations, Curve's decentralized exchange infrastructure played a silent but crucial role in maintaining stablecoin stability across DeFi. The platform's deep liquidity pools and independent pricing mechanisms proved far more robust than centralized exchange systems.

Unlike Binance, where internal oracle failures amplified liquidations and severely mispriced USDe, Curve determined prices based on actual pool liquidity and asset interactions rather than relying on any single centralized source. This architectural difference proved critical during the flash crash, as Curve maintained operational stability even under severe market imbalance.

USDe USDc

The contrast highlights a fundamental weakness in centralized systems: unilateral pricing and insufficient protection against short-term price shocks. Following the crash, Binance had to compensate users and revise its USDe pricing mechanism. While Curve? Simply kept working. Thus proving that decentralized infrastructure can definitely outperform centralized systems under pressure.

Key Takeaways From the Crash

For Users:

  • Stay alert: position monitoring is critical during volatile markets. Curve offers Telegram bot notifications for position health — a tool that could have helped borrowers take action before hard liquidations occurred.
  • Size matters: smaller positions may receive unexpected protection during gas-intensive liquidation events, as arbitrage bots prioritize larger, more profitable liquidations.
  • Lower losses: the average liquidation saw a collateral discount of 5.9%, meaning borrowers lost far less than traditional lending platforms where full liquidation is the standard.

For Curve:

  • Curve Lend v2 is in active development with upgrades to the liquidation protection mechanism designed to address lessons learned from this crash.
  • Improvements will also affect the interfaces, which will be configured by default to create positions more securely and present loan parameters more clearly.

The Bigger Picture

The October crash will be remembered as a defining moment for DeFi infrastructure due to how it tested the systems. And while no setup is perfect, Curve Finance rose up to the challenged and demonstrated remarkable resilience.

The combination of liquidation protection mechanics, crvUSD’s stability, and robust DEX infrastructure protected the vast majority of users during the worst liquidation event in crypto history.

In total, over 90% of all debt positions survived intact, and crvUSD was able to maintain its peg throughout the chaos. Curve proved that well-designed DeFi protocols can weather extreme market conditions with a level of success that even centralized institutions find hard to match. And as the platform continues its development of Lend v2 based on real-world stress testing, the benchmark for even greater resilience is being established.

The crash was severe, but it proved that decentralized finance has grown up. And, ultimately, that’s what it will be remembered for. It validated years of careful protocol design and demonstrated that DeFi can compete with — and in many cases, outperform — its centralized counterparts when markets turn volatile.

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