{"id":"GHSA-rj53-j6jw-7f7g","aliases":["GO-2025-3801"],"status":"published","title":"Babylon vulnerable to chain halt when a message modifies the validator set at the epoch boundary","description":"### Summary\n\nSending a message that modifies the validator set at the epoch boundary halts the chain.\n\n### Impact\n\nDenial of Service - Comos-sdk prevents modifying the validator set from two different modules - https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/types/module/module.go#L811. Such an operation leads to panic and chain halt.\n\n### Detailed Post mortem\n\nhttps://boiling-lake-106.notion.site/2025-06-18-Genesis-mainnet-chain-halt-post-mortem-229f60cc1b5f80b7adf5e3ea0541ea87","severity":{"version":"4.0","score":8.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-754"],"published":"2025-07-08T19:09:11Z","modified":"2026-03-03T04:57:20Z","fixes":[{"ecosystem":"Go","package":"github.com/babylonlabs-io/babylon/v2","fixed_in":["2.1.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon/v2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.1.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/babylonlabs-io/babylon/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.1.0"}]}]},{"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":"2.0.0"},{"fixed":"2.1.0"}]}]}],"references":[{"url":"https://github.com/babylonlabs-io/babylon/security/advisories/GHSA-rj53-j6jw-7f7g","tags":["web","advisory"]},{"url":"https://github.com/babylonlabs-io/babylon/pull/1244/files","tags":["web","fix"]},{"url":"https://boiling-lake-106.notion.site/2025-06-18-Babylon-Genesis-Chain-Halt-Post-Mortem-229f60cc1b5f80b7adf5e3ea0541ea87","tags":["web"]},{"url":"https://github.com/babylonlabs-io/babylon/releases/tag/v2.1.0","tags":["web"]},{"url":"https://github.com/advisories/GHSA-rj53-j6jw-7f7g"},{"url":"https://github.com/babylonlabs-io/babylon","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-rj53-j6jw-7f7g","title":"Babylon vulnerable to chain halt when a message modifies the validator set at the epoch boundary","description":"### Summary\n\nSending a message that modifies the validator set at the epoch boundary halts the chain.\n\n### Impact\n\nDenial of Service - Comos-sdk prevents modifying the validator set from two different modules - https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/types/module/module.go#L811. Such an operation leads to panic and chain halt.\n\n### Detailed Post mortem\n\nhttps://boiling-lake-106.notion.site/2025-06-18-Genesis-mainnet-chain-halt-post-mortem-229f60cc1b5f80b7adf5e3ea0541ea87","status":"published","published":"2025-07-08T19:09:11Z","modified":"2025-07-08T19:09:12Z","cvss":[{"version":"4.0","score":8.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:38:49.837727Z"}],"osv":[{"id":"GHSA-rj53-j6jw-7f7g","title":"Babylon vulnerable to chain halt when a message modifies the validator set at the epoch boundary","description":"### Summary\n\nSending a message that modifies the validator set at the epoch boundary halts the chain.\n\n### Impact\n\nDenial of Service - Comos-sdk prevents modifying the validator set from two different modules - https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/types/module/module.go#L811. Such an operation leads to panic and chain halt.\n\n### Detailed Post mortem\n\nhttps://boiling-lake-106.notion.site/2025-06-18-Genesis-mainnet-chain-halt-post-mortem-229f60cc1b5f80b7adf5e3ea0541ea87","status":"published","published":"2025-07-08T19:09:11Z","modified":"2025-07-28T20:42:21.065772Z","cvss":[{"version":"4.0","score":8.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T15:46:55.877614Z"},{"id":"GO-2025-3801","title":"Babylon vulnerable to chain halt when a message modifies the validator set at the epoch boundary in github.com/babylonlabs-io/babylon","description":"Babylon vulnerable to chain halt when a message modifies the validator set at the epoch boundary in github.com/babylonlabs-io/babylon","status":"published","published":"2025-07-28T19:57:13Z","modified":"2026-03-03T04:57:20.465089Z","updated_at":"2026-11-02T15:47:01.728182Z"}]}}