# Potential Denial-of-Service condition leading to temporary disability in IBC transfers to the native chain

Source: https://junglewise.ai/threats/potential-denial-of-service-condition-leading-to-temporary-disability-0c7dc22d  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-02-12  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 4 · Published 2025-02-12

Potential Denial-of-Service condition leading to temporary disability in IBC transfers to the native chain

Technologies: [github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4 (Go)](https://junglewise.ai/threats/technologies/github-com-cosmos-ibc-apps-middleware-packet-forward-middleware-v4), [github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-cosmos-ibc-apps-middleware-packet-forward-middleware-v5), [github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6 (Go)](https://junglewise.ai/threats/technologies/github-com-cosmos-ibc-apps-middleware-packet-forward-middleware-v6). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 4, published 12 February 2025.

**Which products and versions are affected?** github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4 (Go) SEMVER:introduced=0; github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5 (Go) SEMVER:introduced=0; github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6 (Go) SEMVER:introduced=0; github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 (Go) SEMVER:introduced=0,fixed=7.2.1; and 1 more.

**Is there a fix for This vulnerability?** Yes. github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 (Go): upgrade to 7.2.1 or later; github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8 (Go): upgrade to 8.1.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4 (Go), github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5 (Go), github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6 (Go) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 (Go): upgrade to 7.2.1 or later

  ```sh
  go get github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7@v7.2.1
  ```

- github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8 (Go): upgrade to 8.1.1 or later

  ```sh
  go get github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8@v8.1.1
  ```


## Affected products

- github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4 (Go) SEMVER:introduced=0
- github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5 (Go) SEMVER:introduced=0
- github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6 (Go) SEMVER:introduced=0
- github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 (Go) SEMVER:introduced=0,fixed=7.2.1
- github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8 (Go) SEMVER:introduced=0,fixed=8.1.1

## Related threats

- [GO-2025-3463 - DoS may temporarily disable IBC transfers to native chain in…](https://junglewise.ai/threats/go-2025-3463-dos-may-temporarily-disable-ibc-transfers-to-native-chain-44313a41)
- [GO-2023-2156 - Cosmos packet-forward-middleware vulnerable to chain-halt in…](https://junglewise.ai/threats/go-2023-2156-cosmos-packet-forward-middleware-vulnerable-to-chain-halt-9acebca2)
- [Cosmos packet-forward-middleware vulnerable to chain-halt](https://junglewise.ai/threats/cosmos-packet-forward-middleware-vulnerable-to-chain-halt-6f0aaff7)