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Potential Denial-of-Service condition leading to temporary disability in IBC transfers to the native chainGHSA-6fgm-x6ff-w78f

GHSA-6fgm-x6ff-w78f is a security vulnerability in github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7. A fix is available for github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 — see the affected versions and patch details below.

Also known asGO-2025-3463
Published
Updated
Affected
5 pkgs
Patched
2 / 5
Exploits
None indexed
Exploitation data as of Mar 11, 2025 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

5 pkgs affected
🐹github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7🐹github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8🐹github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4🐹github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5🐹github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Chains using affected versions of Packet Forward Middleware in their IBC Transfer stack are vulnerable to an attack in which there is a potential denial of service. This affects IBC transfers for any asset which is being transferred between another chain and its native chain.

We recommend upgrading as soon as possible.

THIS IS A STATE BREAKING CHANGE

Patches

Versions 7.2.1 and 8.1.1 are patched.

Workarounds

N/A

References

N/A

Affected Packages

5 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7all versions7.2.1go get github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7@v7.2.1
🐹Gogithub.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8all versions8.1.1go get github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8@v8.1.1
🐹Gogithub.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4all versionsNo fix
🐹Gogithub.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5all versionsNo fix
🐹Gogithub.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6all versionsNo fix

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 to 7.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6fgm-x6ff-w78f is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Impact Chains using affected versions of Packet Forward Middleware in their IBC Transfer stack are vulnerable to an attack in which there is a potential denial of service. This affects IBC transfers for any asset which is being transferred between another chain and its native chain. We recommend upgrading as soon as possible. __THIS IS A STATE BREAKING CHANGE__ ### Patches Versions [7.2.1](https://github.com/cosmos/ibc-apps/releases/tag/middleware%2Fpacket-forward-middleware%2Fv7.2.1) and [8.1.1](https://github.com/cosmos/ibc-apps/releases/tag/middleware%2Fpacket-forward-middleware%2F
O3 Security · Impact-Aware SCA

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Potential Denial-of-Service condition leading to temporary…