THORChain to Restart Rujira with v3.21 Exploit Fix Around Oct 23
Key Summary
THORChain is preparing to restart Rujira, its halted App Layer, with a v3.21 network upgrade aimed at patching a vulnerability that froze the layer in late September. The upgrade targets block height 28,366,100, expected to land on October 23, 2026, and includes fixes for SOL and ZEC trading, limit swaps, and bRUNE staking.
Precedent & Market Context
THORChain's fee rebound is a mixed signal. The project needs to develop a sustainable growth strategy to maintain liquidity and fee stability. A sustainable growth strategy will be crucial for THORChain's long-term success.
Main Event
THORChain is preparing to switch Rujira back on. The protocol's v3.21 network upgrade is designed to patch the vulnerability that froze Rujira's App Layer in late September. If node operators sign off, trading, lending, and automated trading services are expected to resume.
The fix targets block height 28,366,100. That block is estimated to land on October 23, 2026, between 13:40 and 15:20 UTC.
Analysis & Market Impact
The proposed 24-hour liquidation grace period for credit positions with a loan-to-value ratio above 100% could impact borrowers. If the grace period is approved, it buys time, but if it isn't, liquidations could hit as soon as services resume. Rujira caught the exploit, paused within a day, avoided user losses, and shipped a targeted fix.
Implications & Outlook
THORChain's pitch has always been native cross-chain swaps without wrapped tokens. Rujira extends that idea into a fuller app layer with trading, lending, and automated strategies built on top of the base protocol. SOL and ZEC trading broadens the assets available on the platform. Limit swaps let traders set a target price instead of taking whatever the market offers. bRUNE staking gives RUNE holders another way to put tokens to work inside the ecosystem.