{"id":"GHSA-56j4-446m-qrf6","aliases":["GO-2025-3791"],"status":"published","title":"Babylon vulnerable to chain half when transaction has fees different than `ubbn`","description":"### Summary\n\nSending transactions with fees different than native Babylon genesis denom (`ubbn`) leads to chain halt.\n\n### Impact\n\nDenial of Service - Due to panic in the `x/distribution` module `BeginBlocker` triggered by a error when sending fees  from `feeCollector` to `x/distribution` module - https://github.com/cosmos/cosmos-sdk/blob/main/x/distribution/keeper/allocation.go#L28 Babylon Genesis will halt","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-755"],"published":"2025-06-30T17:54:02Z","modified":"2026-03-03T04:56:42Z","fixes":[{"ecosystem":"Go","package":"github.com/babylonlabs-io/babylon/v2","fixed_in":["2.2.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon/v2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.1.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.1.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.0"}]}]}],"references":[{"url":"https://github.com/babylonlabs-io/babylon/security/advisories/GHSA-56j4-446m-qrf6","tags":["web","advisory"]},{"url":"https://github.com/babylonlabs-io/babylon/commit/fe67aebd5216e7d3afa1d7dee2a3f82e548556f3","tags":["web","fix"]},{"url":"https://github.com/cosmos/cosmos-sdk/blob/main/x/distribution/keeper/allocation.go#L28","tags":["web"]},{"url":"https://github.com/advisories/GHSA-56j4-446m-qrf6"},{"url":"https://github.com/babylonlabs-io/babylon","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-56j4-446m-qrf6","title":"Babylon vulnerable to chain half when transaction has fees different than `ubbn`","description":"### Summary\n\nSending transactions with fees different than native Babylon genesis denom (`ubbn`) leads to chain halt.\n\n### Impact\n\nDenial of Service - Due to panic in the `x/distribution` module `BeginBlocker` triggered by a error when sending fees  from `feeCollector` to `x/distribution` module - https://github.com/cosmos/cosmos-sdk/blob/main/x/distribution/keeper/allocation.go#L28 Babylon Genesis will halt","status":"published","published":"2025-06-30T17:54:02Z","modified":"2025-07-29T23:43:42Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:38:51.864708Z"}],"osv":[{"id":"GHSA-56j4-446m-qrf6","title":"Babylon vulnerable to chain half when transaction has fees different than `ubbn`","description":"### Summary\n\nSending transactions with fees different than native Babylon genesis denom (`ubbn`) leads to chain halt.\n\n### Impact\n\nDenial of Service - Due to panic in the `x/distribution` module `BeginBlocker` triggered by a error when sending fees  from `feeCollector` to `x/distribution` module - https://github.com/cosmos/cosmos-sdk/blob/main/x/distribution/keeper/allocation.go#L28 Babylon Genesis will halt","status":"published","published":"2025-06-30T17:54:02Z","modified":"2025-07-29T23:43:41Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T15:46:37.864461Z"},{"id":"GO-2025-3791","title":"Babylon vulnerable to chain half when transaction has fees different than `ubbn` in github.com/babylonlabs-io/babylon","description":"Babylon vulnerable to chain half when transaction has fees different than `ubbn` in github.com/babylonlabs-io/babylon","status":"published","published":"2025-07-28T19:57:13Z","modified":"2026-03-03T04:56:42.851801Z","updated_at":"2026-11-02T15:47:01.728182Z"}]}}