ixo Blockchain x/bonds DID-resolved payer drain + x/entity ICA authorization bypass

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

9.3 · 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 · score source

EPSS

• CVE-2026-61604: 0.27% estimated exploitation activity in the next 30 days; percentile 18.61 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact Type: Improper authorization leading to unauthorized movement of user funds. 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. Patches Fixed in v8.0.0,…

Published by the source

24 Sep 2026, 19:22 UTC

Last modified by the source

1 Oct 2026, 20:45 UTC

Source last checked

26 Oct 2026, 15:29 UTC

1. Revision 4 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-w3rp-4cm2-4wgc

2. Revision 3 · amended · 25 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GO-2026-6595

4. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-w3rp-4cm2-4wgc

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# Patch Next advisory brief: CVE-2026-61604

Advisory: ixo Blockchain x/bonds DID-resolved payer drain + x/entity ICA authorization bypass
IDs: CVE-2026-61604, GHSA-w3rp-4cm2-4wgc
Record: https://patchnext.com/advisories/cve-2026-61604 (revision 4, source checked 26 Oct 2026, 15:29 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/ixofoundation/ixo-blockchain/v8 8.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/ixofoundation/ixo-blockchain/v3: affected <= 3.0.0
- Go github.com/ixofoundation/ixo-blockchain/v4: affected <= 4.0.0
- Go github.com/ixofoundation/ixo-blockchain/v6: affected <= 6.0.1
- Go github.com/ixofoundation/ixo-blockchain: affected <= 1.6.0
- Go github.com/ixofoundation/ixo-blockchain/v8: affected < 8.0.0; fixed in 8.0.0
- Go github.com/ixofoundation/ixo-blockchain/v7: affected <= 7.0.0
- Go github.com/ixofoundation/ixo-blockchain/v5: affected <= 5.0.0

## Suggested inspection (read-only)
- Go github.com/ixofoundation/ixo-blockchain/v3: check the installed version with your package manager.
- Go github.com/ixofoundation/ixo-blockchain/v4: check the installed version with your package manager.
- Go github.com/ixofoundation/ixo-blockchain/v6: check the installed version with your package manager.
- Go github.com/ixofoundation/ixo-blockchain: check the installed version with your package manager.
- Go github.com/ixofoundation/ixo-blockchain/v8: check the installed version with your package manager.
- Go github.com/ixofoundation/ixo-blockchain/v7: check the installed version with your package manager.
- Go github.com/ixofoundation/ixo-blockchain/v5: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/ixofoundation/ixo-blockchain/v3, github.com/ixofoundation/ixo-blockchain/v4, github.com/ixofoundation/ixo-blockchain/v6, github.com/ixofoundation/ixo-blockchain, github.com/ixofoundation/ixo-blockchain/v8, github.com/ixofoundation/ixo-blockchain/v7, github.com/ixofoundation/ixo-blockchain/v5.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GO-2026-6595 (OSV record GO-2026-6595 lists affected ranges: Go github.com/ixofoundation/ixo-blockchain >=0; Go github.com/ixofoundation/ixo-blockchain/v3 >=0; Go github.com/ixofoundation/ixo-blockchain/v4 >=0; Go github.com/ixofoundation/ixo-blockchain/v5 >=0; Go github.com/ixofoundation/ixo-blockchain/v6 >=0; Go github.com/ixofoundation/ixo-blockchain/v7 >=0; Go github.com/ixofoundation/ixo-blockchain/v8 >=0 <8.0.0 (fixed))
- Verified: https://osv.dev/vulnerability/GHSA-w3rp-4cm2-4wgc (OSV record GHSA-w3rp-4cm2-4wgc lists affected ranges: Go github.com/ixofoundation/ixo-blockchain/v8 >=0 =0 =0 =0 =0 =0 =0 <=1.6.0)
- Verified: https://github.com/advisories/GHSA-w3rp-4cm2-4wgc (GitHub-reviewed advisory GHSA-w3rp-4cm2-4wgc lists affected ranges: Go github.com/ixofoundation/ixo-blockchain/v8 >=0 =0 =0 =0 =0 =0 =0 <=1.6.0)

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