# Security Roundup: Summer.fi Vault Loses About $6 Million to Share-Price Inflation

A net-asset-value manipulation drained a lending vault as researchers recorded another week of recurring losses in decentralized finance (DeFi).

- Published: 2026-07-07T10:34:27.218Z
- Canonical: https://polylog.news/crypto/2026-07-07/security-roundup-summer-fi-vault-loses-about-6-million-to-sh
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [DeFiHackLabs](https://github.com/SunWeb3Sec/DeFiHackLabs/commit/fb85eae7c3e10482c21b538781908fb554cd7861), [Rekt News](https://www.rekt.news/)

Security researchers published a working reproduction of an exploit against Summer.fi's FleetCommander vault that lost about $6 million on July 6, according to a DeFiHackLabs proof-of-concept. The method was net-asset-value inflation, in wh…

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