{"id":"CVE-2021-29136","aliases":["GHSA-9m95-8hx6-7p9v","GO-2022-0815"],"url":"https://o3.security/vulnerability/CVE-2021-29136","summary":"Improper input validation in umoci","details":"Open Container Initiative umoci before 0.4.7 allows attackers to overwrite arbitrary host paths via a crafted image that causes symlink traversal when \"umoci unpack\" or \"umoci raw unpack\" is used.","published":"2021-04-06T16:15:16.520Z","modified":"2026-08-27T08:14:51.664359Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.00344,"percentile":0.27558,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/opencontainers/umoci","fixedVersion":"0.4.7"}],"fix":{"url":"https://github.com/opencontainers/umoci/commit/d9efc31daf2206f7d3fdb839863cf7a576a2eb57","label":"opencontainers/umoci@d9efc31"},"references":[{"type":"ADVISORY","url":"https://github.com/opencontainers/umoci/security/advisories/GHSA-9m95-8hx6-7p9v"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2021/04/06/2"},{"type":"FIX","url":"https://github.com/opencontainers/umoci/commit/d9efc31daf2206f7d3fdb839863cf7a576a2eb57"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T08:14:51.664359Z"}}