security: validate Solana transaction instructions before co-signing#14
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rawgroundbeef merged 3 commits intomainfrom Mar 10, 2026
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Add 4-layer instruction validation to prevent malicious instructions from being bundled into facilitator-signed Solana transactions: 1. Program ID allowlist (SPL Token, Token-2022, ATA, ComputeBudget only) 2. Token instruction type allowlist (Transfer and TransferChecked only) 3. Fee payer isolation (facilitator can't be source/authority) 4. Payment requirements verification (amount, mint, destination ATA) Blocks all 5 attack vectors from the security audit: SOL theft, token theft, account reallocation, governance hijack, token delegation. Includes integration tests against mainnet for all attack vectors. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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ownerAddress may be an EVM hex address for multi-chain facilitators. Extract the facilitator's Solana public key from the transaction's fee payer (index 0) which is always the correct Solana address. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Add 4-layer instruction validation to prevent malicious instructions from being bundled into facilitator-signed Solana transactions:
Blocks all 5 attack vectors from the security audit: SOL theft, token theft, account reallocation, governance hijack, token delegation.
Includes integration tests against mainnet for all attack vectors.