Hacks & Exploits
THORChain Prepares for Rujira Restart with v3.21 Upgrade Scheduled for October 23
THORChain is gearing up to restart its Rujira App Layer with the upcoming v3.21 network upgrade, which is designed to address a vulnerability that led to the suspension of services in late September. The upgrade is anticipated to take place around block height 28,366,100, estimated to land on October 23, 2026, between 13:40 and 15:20 UTC.
The issue originated from the Rujira FIN contract, where an exploit detected on September 26 allowed unauthorized transfers of a concentrated liquidity position belonging to the Rujira team. In response, THORChain paused the App Layer on September 27, ensuring that no user funds were lost during the incident.
Once the v3.21 upgrade is activated and approved by node operators, Rujira’s trading, lending, and automated trading services are expected to resume. The upgrade will also restore support for SOL and ZEC trading, limit swaps, and bRUNE staking, enhancing the platform's offerings.
In addition to the upgrade, Rujira plans to propose a conditional 24-hour liquidation grace period for credit positions with a loan-to-value ratio above 100%. This measure aims to provide borrowers with time to adjust their collateral before potential liquidations occur when services resume.
The restart is significant for THORChain, which promotes native cross-chain swaps without the need for wrapped tokens. The reactivation of Rujira will expand the platform's functionalities, allowing users to engage in trading and lending activities more effectively.
Borrowers holding positions above 100% LTV should consider the restart window as a critical deadline. If the proposed grace period is approved, it will provide essential time to manage their positions.
FAQ
What is the purpose of the THORChain v3.21 upgrade?
The v3.21 upgrade is designed to address a vulnerability that led to the suspension of services in late September, specifically related to the Rujira FIN contract.
When is the v3.21 upgrade scheduled to take place?
The upgrade is anticipated to occur around block height 28,366,100, estimated to land on October 23, 2026, between 13:40 and 15:20 UTC.
What services will resume after the v3.21 upgrade?
Once the upgrade is activated and approved, Rujira’s trading, lending, and automated trading services are expected to resume, along with support for SOL and ZEC trading.
What is the proposed conditional liquidation grace period?
Rujira plans to propose a conditional 24-hour liquidation grace period for credit positions with a loan-to-value ratio above 100%, allowing borrowers time to adjust their collateral before potential liquidations.
Why is the restart of Rujira significant for THORChain?
The restart is significant as it promotes native cross-chain swaps without the need for wrapped tokens, expanding the platform's functionalities and enhancing user engagement in trading and lending activities.