{"id":"CVE-2020-12439","aliases":["GHSA-6x52-88cq-55q5"],"url":"https://o3.security/vulnerability/CVE-2020-12439","summary":"Grin allows attackers to adversely affect availability of data on a Mimblewimble blockchain","details":"Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.","published":"2020-05-05T22:15:12.933Z","modified":"2026-07-08T23:34:19.172769Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"grin","fixedVersion":"3.1.0"}],"fix":{"url":"https://github.com/mimblewimble/grin/pull/3236","label":"mimblewimble/grin#3236"},"references":[{"type":"ADVISORY","url":"https://github.com/mimblewimble/grin-security/blob/master/CVEs/CVE-2020-12439.md"},{"type":"FIX","url":"https://github.com/mimblewimble/grin/issues/3235"},{"type":"FIX","url":"https://github.com/mimblewimble/grin/pull/3236"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T23:34:19.172769Z"}}