{"id":"CVE-2020-5232","aliases":["EUVD-2020-0255","GHSA-8f9f-pc5v-9r5h"],"status":"published","title":"Ethereum Name Service - Malicious takeover of previously owned ENS names","description":"A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.","severity":{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.01181,"percentile":0.67937,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-285"],"published":"2020-01-30T23:55:04Z","modified":"2026-10-24T10:50:39Z","fixes":[{"ecosystem":"npm","package":"@ensdomains/ens","fixed_in":["0.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@ensdomains/ens","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@ensdomains/ens","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.4.0"}]}]}],"products":[{"vendor":"ens.domains","product":"ethereum_name_service"},{"vendor":"ensdomains","product":"@ensdomains/ens"}],"references":[{"url":"https://github.com/ensdomains/ens/security/advisories/GHSA-8f9f-pc5v-9r5h","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/ensdomains/ens/commit/36e10e71fcddcade88646821e0a57cc6c19e1ecf","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5232","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8f9f-pc5v-9r5h"}],"sources":{"cve":[{"id":"CVE-2020-5232","title":"Ethereum Name Service - Malicious takeover of previously owned ENS names","description":"A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.","status":"published","published":"2020-01-30T23:55:13Z","modified":"2024-08-04T08:22:09.005Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:35:47.877975Z"}],"euvd":[{"id":"EUVD-2020-0255","description":"A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.","status":"published","published":"2020-01-30T23:55:13Z","modified":"2024-08-04T08:22:09Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:08:07.28588Z"}],"ghsa":[{"id":"GHSA-8f9f-pc5v-9r5h","title":"Malicious takeover of previously owned ENS names","description":"### Impact\nA user who owns an ENS domain can set a \"trapdoor\", allowing them to transfer ownership to another user, and later regain ownership without the new owner's consent or awareness.\n\n### Patches\n\nA new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry. The registry is newly deployed at [0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e](https://etherscan.io/address/0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e).\n\n### Workarounds\nDo not accept transfers of ENS domains from other users on the old registrar.","status":"published","published":"2020-01-30T23:55:04Z","modified":"2023-01-29T05:05:47Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:36:25.835323Z"}],"nvd":[{"id":"CVE-2020-5232","description":"A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.","status":"published","published":"2020-01-31T00:15:09.973Z","modified":"2026-06-17T03:21:04.633Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:05:53.837808Z"}],"osv":[{"id":"CVE-2020-5232","description":"A user who owns an ENS domain can set a trapdoor, allowing them to transfer ownership to another user, and later regain ownership without the new owners consent or awareness. A new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry.","status":"published","published":"2020-01-31T00:15:09.973Z","modified":"2026-10-24T10:50:39.60423295Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:16.936975Z"},{"id":"GHSA-8f9f-pc5v-9r5h","title":"Malicious takeover of previously owned ENS names","description":"### Impact\nA user who owns an ENS domain can set a \"trapdoor\", allowing them to transfer ownership to another user, and later regain ownership without the new owner's consent or awareness.\n\n### Patches\n\nA new ENS deployment is being rolled out that fixes this vulnerability in the ENS registry. The registry is newly deployed at [0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e](https://etherscan.io/address/0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e).\n\n### Workarounds\nDo not accept transfers of ENS domains from other users on the old registrar.","status":"published","published":"2020-01-30T23:55:04Z","modified":"2026-09-10T03:48:43.111378804Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T15:46:42.437513Z"}]}}