{"id":"GHSA-86h5-xcpx-cfqc","aliases":["GO-2024-2584"],"status":"published","title":"ASA-2024-005: Potential slashing evasion during re-delegation","description":"## ASA-2024-005: Potential slashing evasion during re-delegation\n\n**Component**: Cosmos SDK\n**Criticality**: Low\n**Affected Versions**: Cosmos SDK versions \u003c= 0.50.4; \u003c= 0.47.9\n**Affected Users**: Chain developers, Validator and Node operators\n**Impact**: Slashing Evasion\n\n## Summary\n\nAn issue was identified in the slashing mechanism that may allow for the evasion of slashing penalties during a slashing event. If a delegation contributed to byzantine behavior of a validator, and the validator has not yet been slashed, it may be possible for that delegation to evade a pending slashing penalty through re-delegation behavior. Additional validation logic was added to restrict this behavior.\n\n## Next Steps for Impacted Parties\n\nIf you are a chain developer on an affected version of the Cosmos SDK, it is advised to update to the latest available version of the Cosmos SDK for your project.  Once a patched version is available, it is recommended that network operators upgrade.\n\nA Github Security Advisory for this issue is available in the Cosmos-SDK [repository](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-86h5-xcpx-cfqc). For more information about Cosmos SDK, see https://docs.cosmos.network/.\n\nThis issue was found by cat shark (Khanh) who reported it to the Cosmos Bug Bounty Program on HackerOne on December 6, 2023. If you believe you have found a bug in the Interchain Stack or would like to contribute to the program by reporting a bug, please see https://hackerone.com/cosmos.","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-372"],"published":"2024-02-27T21:55:52Z","modified":"2026-10-01T20:45:05Z","fixes":[{"ecosystem":"Go","package":"github.com/cosmos/cosmos-sdk","fixed_in":["0.50.5","0.47.10"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/cosmos/cosmos-sdk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.50.0"},{"last_affected":"0.50.4"},{"fixed":"0.50.5"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/cosmos/cosmos-sdk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.47.9"},{"fixed":"0.47.10"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/cosmos-sdk","ranges":[{"type":"SEMVER","events":[{"introduced":"0.50.0"},{"fixed":"0.50.5"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/cosmos-sdk","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.47.10"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cosmos/cosmos-sdk","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.47.10"},{"introduced":"0.50.0"},{"fixed":"0.50.5"}]}]}],"references":[{"url":"https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-86h5-xcpx-cfqc","tags":["web","advisory"]},{"url":"https://github.com/cosmos/cosmos-sdk/commit/7dbed2fc0c3ed7c285645e21cb1037d8810372ae","tags":["web","fix"]},{"url":"https://github.com/cosmos/cosmos-sdk/commit/d1b5b0c5ae2c51206cc1849e09e4d59986742cc3","tags":["web","fix"]},{"url":"https://github.com/advisories/GHSA-86h5-xcpx-cfqc"},{"url":"https://github.com/cosmos/cosmos-sdk","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-86h5-xcpx-cfqc","title":"ASA-2024-005: Potential slashing evasion during re-delegation","description":"## ASA-2024-005: Potential slashing evasion during re-delegation\n\n**Component**: Cosmos SDK\n**Criticality**: Low\n**Affected Versions**: Cosmos SDK versions \u003c= 0.50.4; \u003c= 0.47.9\n**Affected Users**: Chain developers, Validator and Node operators\n**Impact**: Slashing Evasion\n\n## Summary\n\nAn issue was identified in the slashing mechanism that may allow for the evasion of slashing penalties during a slashing event. If a delegation contributed to byzantine behavior of a validator, and the validator has not yet been slashed, it may be possible for that delegation to evade a pending slashing penalty through re-delegation behavior. Additional validation logic was added to restrict this behavior.\n\n## Next Steps for Impacted Parties\n\nIf you are a chain developer on an affected version of the Cosmos SDK, it is advised to update to the latest available version of the Cosmos SDK for your project.  Once a patched version is available, it is recommended that network operators upgrade.\n\nA Github Security Advisory for this issue is available in the Cosmos-SDK [repository](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-86h5-xcpx-cfqc). For more information about Cosmos SDK, see https://docs.cosmos.network/.\n\nThis issue was found by cat shark (Khanh) who reported it to the Cosmos Bug Bounty Program on HackerOne on December 6, 2023. If you believe you have found a bug in the Interchain Stack or would like to contribute to the program by reporting a bug, please see https://hackerone.com/cosmos.\n","status":"published","published":"2024-02-27T21:55:52Z","modified":"2026-03-17T05:03:18Z","cwes":["CWE-372"],"updated_at":"2026-11-02T14:39:36.642723Z"}],"osv":[{"id":"GHSA-86h5-xcpx-cfqc","title":"ASA-2024-005: Potential slashing evasion during re-delegation","description":"## ASA-2024-005: Potential slashing evasion during re-delegation\n\n**Component**: Cosmos SDK\n**Criticality**: Low\n**Affected Versions**: Cosmos SDK versions \u003c= 0.50.4; \u003c= 0.47.9\n**Affected Users**: Chain developers, Validator and Node operators\n**Impact**: Slashing Evasion\n\n## Summary\n\nAn issue was identified in the slashing mechanism that may allow for the evasion of slashing penalties during a slashing event. If a delegation contributed to byzantine behavior of a validator, and the validator has not yet been slashed, it may be possible for that delegation to evade a pending slashing penalty through re-delegation behavior. Additional validation logic was added to restrict this behavior.\n\n## Next Steps for Impacted Parties\n\nIf you are a chain developer on an affected version of the Cosmos SDK, it is advised to update to the latest available version of the Cosmos SDK for your project.  Once a patched version is available, it is recommended that network operators upgrade.\n\nA Github Security Advisory for this issue is available in the Cosmos-SDK [repository](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-86h5-xcpx-cfqc). For more information about Cosmos SDK, see https://docs.cosmos.network/.\n\nThis issue was found by cat shark (Khanh) who reported it to the Cosmos Bug Bounty Program on HackerOne on December 6, 2023. If you believe you have found a bug in the Interchain Stack or would like to contribute to the program by reporting a bug, please see https://hackerone.com/cosmos.\n","status":"published","published":"2024-02-27T21:55:52Z","modified":"2024-11-04T17:14:28Z","cwes":["CWE-372"],"updated_at":"2026-11-02T15:46:42.077781Z"},{"id":"GO-2024-2584","title":"Slashing evasion in github.com/cosmos/cosmos-sdk","description":"Slashing evasion in github.com/cosmos/cosmos-sdk","status":"published","published":"2024-03-05T19:43:51Z","modified":"2026-10-01T20:45:05.10959672Z","updated_at":"2026-11-02T15:47:01.185262Z"}]}}