{"id":"GHSA-6fgm-x6ff-w78f","aliases":["GO-2025-3463"],"status":"published","title":"Potential Denial-of-Service condition leading to temporary disability in IBC transfers to the native chain","description":"### Impact\n\nChains 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.\n\nWe recommend upgrading as soon as possible.\n\n__THIS IS A STATE BREAKING CHANGE__\n\n\n### Patches\nVersions [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%2Fv8.1.1) are patched.\n\n### Workarounds\nN/A\n\n### References\nN/A","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2025-02-12T22:01:24Z","modified":"2026-03-03T04:56:16Z","fixes":[{"ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7","fixed_in":["7.2.1"],"sources":["ghsa","osv"]},{"ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8","fixed_in":["8.1.1"],"sources":["ghsa","osv"]},{"ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4","fixed_in":["7.2.1"],"sources":["ghsa"]},{"ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5","fixed_in":["7.2.1"],"sources":["ghsa"]},{"ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6","fixed_in":["7.2.1"],"sources":["ghsa"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1.1"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.1.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v4","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v5","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v6","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.1.1"}]}]}],"references":[{"url":"https://github.com/cosmos/ibc-apps/security/advisories/GHSA-6fgm-x6ff-w78f","tags":["web","advisory"]},{"url":"https://github.com/cosmos/ibc-apps/releases/tag/middleware%2Fpacket-forward-middleware%2Fv7.2.1","tags":["web"]},{"url":"https://github.com/cosmos/ibc-apps/releases/tag/middleware%2Fpacket-forward-middleware%2Fv8.1.1","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6fgm-x6ff-w78f"},{"url":"https://github.com/cosmos/ibc-apps","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-6fgm-x6ff-w78f","title":"Potential Denial-of-Service condition leading to temporary disability in IBC transfers to the native chain","description":"### Impact\n\nChains 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.\n\nWe recommend upgrading as soon as possible.\n\n__THIS IS A STATE BREAKING CHANGE__\n\n\n### Patches\nVersions [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%2Fv8.1.1) are patched.\n\n### Workarounds\nN/A\n\n### References\nN/A","status":"published","published":"2025-02-12T22:01:24Z","modified":"2025-03-11T17:14:28Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T14:38:34.185137Z"}],"osv":[{"id":"GHSA-6fgm-x6ff-w78f","title":"Potential Denial-of-Service condition leading to temporary disability in IBC transfers to the native chain","description":"### Impact\n\nChains 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.\n\nWe recommend upgrading as soon as possible.\n\n__THIS IS A STATE BREAKING CHANGE__\n\n\n### Patches\nVersions [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%2Fv8.1.1) are patched.\n\n### Workarounds\nN/A\n\n### References\nN/A","status":"published","published":"2025-02-12T22:01:24Z","modified":"2025-03-11T17:14:26Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T15:46:39.618611Z"},{"id":"GO-2025-3463","title":"DoS may temporarily disable IBC transfers to native chain in github.com/cosmos/ibc-apps/middleware/packet-forward-middleware","description":"DoS may temporarily disable IBC transfers to native chain in github.com/cosmos/ibc-apps/middleware/packet-forward-middleware","status":"published","published":"2025-03-10T20:41:22Z","modified":"2026-03-03T04:56:16.826195Z","updated_at":"2026-11-02T15:47:01.728182Z"}]}}