{"id":"CVE-2020-12439","aliases":["EUVD-2022-2875","GHSA-6x52-88cq-55q5"],"status":"published","title":"Grin allows attackers to adversely affect availability of data on a Mimblewimble blockchain","description":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01551,"percentile":0.75284,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-404"],"published":"2020-05-05T21:19:39Z","modified":"2026-10-20T10:51:46Z","fixes":[{"ecosystem":"crates.io","package":"grin","fixed_in":["3.1.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"grin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"grin","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.1.0"}]}]}],"products":[{"vendor":"grin","product":"grin"}],"references":[{"url":"https://github.com/mimblewimble/grin/pull/3236","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/mimblewimble/grin-security/blob/master/CVEs/CVE-2020-12439.md","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/mimblewimble/grin/issues/3235","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12439","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6x52-88cq-55q5"}],"sources":{"cve":[{"id":"CVE-2020-12439","description":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","status":"published","published":"2020-05-05T21:19:39Z","modified":"2024-08-04T11:56:52.061Z","updated_at":"2026-11-02T14:35:52.925152Z"}],"euvd":[{"id":"EUVD-2022-2875","description":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","status":"published","published":"2020-05-05T21:19:39Z","modified":"2024-08-04T11:56:52Z","updated_at":"2026-11-03T03:07:39.896975Z"}],"ghsa":[{"id":"GHSA-6x52-88cq-55q5","title":"Grin allows attackers to adversely affect availability of data on a Mimblewimble blockchain","description":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","status":"published","published":"2022-05-24T17:17:13Z","modified":"2024-02-01T21:47:48Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T14:37:34.405364Z"}],"nvd":[{"id":"CVE-2020-12439","description":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","status":"published","published":"2020-05-05T22:15:12.933Z","modified":"2026-06-17T02:51:49.71Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:05:59.718774Z"}],"osv":[{"id":"CVE-2020-12439","description":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","status":"published","published":"2020-05-05T22:15:12.933Z","modified":"2026-10-20T10:51:46.256944846Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:44:14.034736Z"},{"id":"GHSA-6x52-88cq-55q5","title":"Grin allows attackers to adversely affect availability of data on a Mimblewimble blockchain","description":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","status":"published","published":"2022-05-24T17:17:13Z","modified":"2024-02-01T22:26:44.371487Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:46:40.308826Z"}]}}