Allbridge

Allbridge is a cross-chain bridging platform founded in June 2021 that enables stablecoin and token transfers across more than fifteen blockchains. Its central focus is native stablecoin portability—moving USDC and USDT between chains without issuing wrapped tokens—though its product suite has expanded to cover general token bridging and universal low-fee routing. On Solana, Allbridge operates a dedicated on-chain program (BrdgN2RPzEMWF96ZbnnJaUtQDQx7VRXYaHHbYCBvceWB) that handles liquidity directly without intermediary wrapped assets.

Three Products, One Platform

Allbridge divides its functionality across three distinct offerings.

Allbridge Core is the flagship stablecoin bridge. It connects independent liquidity pools across EVM and non-EVM chains using a virtual asset called vUSD as an internal settlement mechanism. A sender deposits USDC or USDT into a pool on the source chain; the contract mints vUSD internally, transmits the instruction cross-chain, and the destination pool releases an equivalent amount of the target stablecoin. No wrapped tokens are issued to users at any point. The smart contracts on each supported chain hold all liquidity and execute stable-swap conversions autonomously—Allbridge never holds custody of user funds.

Pool pricing uses invariant-based stable-swap math, the same bonding-curve approach pioneered by Curve Finance, ensuring predictable execution even as balances shift. When pool imbalances develop, the protocol arbitrage mechanism incentivizes external liquidity restoration. As supplemental routing options, Allbridge Core integrates Circle Cross-Chain Transfer Protocol (CCTP V2, added April 2025) and LayerZero Omnichain Fungible Token (OFT) standard, giving users alternative paths where those routes offer better rates or reliability.

Liquidity providers earn 80% of all transfer fees, with rewards accruing in real time and no mandatory lockup period. Users can also pay bridge fees in either the native gas token or the stablecoin being transferred, and optionally fund a destination-chain gas top-up at point of transfer.

Allbridge Classic supports a wider asset set, including native and wrapped tokens across a broader chain selection, for users moving assets that fall outside the stablecoin-focused Core pools.

Allbridge Next targets retail volume with a flat fee of approximately 0.1% and settlement benchmarked under 30 seconds on Solana. Its routing focuses on eight chains and serves as the consumer-facing interface for quick, small-to-mid-size transfers.

Supported Chains

Allbridge Core network spans more than fifteen blockchains. EVM chains include Ethereum, BNB Chain, Polygon, Avalanche, Arbitrum, Base, Celo, Optimism, Linea, Unichain, and Sonic. Non-EVM chains covered include Solana, Tron, Sui (added February 2025 as the twelfth network), and Stellar (added through a December 2025 on-chain campaign). The Tron integration is notable because it provides direct TRC-20 USDT bridging, relevant given Tron large share of global USDT supply. New chains are submitted to governance before activation.

For pool depth, Allbridge is competitive for transfers up to approximately $500,000; transactions substantially larger begin to experience slippage, as pool sizes are smaller than native CCTP flows or Wormhole NTT-backed pools.

The ABR0 Token

The platform native token underwent a major migration in November 2025. Legacy ABR holders converted to ABR0 at a 1:1 ratio via an Ethereum smart contract; holders were required to bridge ABR to Ethereum before initiating the migration. The new token implements LayerZero OFT standard, making it natively portable across all chains Allbridge supports without custodial relays.

ABR0 trades on Uniswap (Ethereum) and Jupiter (Solana). Its primary utility is a fee discount: users who pay bridge fees in ABR0 receive a 25% reduction off the standard rate, calculated using the prior day average trading price.

Security History

Allbridge has been exploited twice through the same flash loan price manipulation vector, a fact central to evaluating the protocol.

The first incident occurred in April 2023 and resulted in approximately $573,000 in losses. An attacker manipulated pool pricing through rapid stablecoin swaps and extracted liquidity at distorted rates. Following the incident, Allbridge stated it had remediated the vulnerability by restructuring pool architecture to prevent the same attack path.

The second incident occurred on July 19-20, 2026. An attacker borrowed $1.12 million in USDC from Kamino, a Solana lending protocol, and used the flash loan to execute rapid stablecoin swaps that distorted pricing within Allbridge Core Solana pools. The attacker then withdrew approximately $2.24 million in USDC at the manipulated rate, netting an estimated $1.65 million after loan repayment. The stolen funds were bridged to an Ethereum address before further dispersal.

The 2026 attack succeeded because the 2023 remediation applied to multi-pool contract structures on EVM chains but left the Solana deployment—where USDC and USDT remained in a shared pool configuration—unaddressed. Allbridge paused the Core protocol immediately after detection and asked liquidity providers to withdraw remaining funds. The team stated user liquidity was not at immediate further risk, committed to a post-mortem, and appealed to traders who profited from pool imbalances to return funds voluntarily.

Third-party audits for the protocol have been conducted by Kudelski Security, Quarkslab (January 2024, covering the Soroban Bridge), and Sherlock through a public audit contest. A bug bounty program operates through HackenProof.

Current Status and Roadmap

As of August 2026, Allbridge Next and Allbridge Classic remain operational. The Core protocol was paused following the July 2026 exploit; the team August 2026 communications describe July as a real test while emphasizing continued development. Publicly stated upcoming work includes ZK-proof transfers designed to obscure transaction amounts and routing paths for users with privacy requirements. An Ambassador Program with referral-based rewards is live on next.allbridge.io, with an anti-farming system introduced in August 2026 to prioritize quality referrals over volume.

Allbridge has processed substantial cross-chain stablecoin volume since its 2021 launch and maintains one of the broader multi-chain footprints in the bridging sector, with coverage of chains like Stellar and Tron that many competitors do not support. The protocol repeated vulnerability to flash loan manipulation at the Solana layer—despite a claimed prior fix—is a material consideration for liquidity providers evaluating the platform security track record.