{"id":"UBUNTU-CVE-2026-50163","details":"oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link(\"victim.secret\", \"\u003cextract_base\u003e/payload.tar.gz/evil_cwd_link\") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname=\"victim.secret\" with io.deis.oras.content.unpack: \"true\", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.","modified":"2026-07-29T10:18:37.993486215Z","published":"2026-07-17T20:17:00Z","upstream":["CVE-2026-50163"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-50163"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-50163"},{"type":"REPORT","url":"https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp"},{"type":"REPORT","url":"https://github.com/oras-project/oras-go/pull/1232"}],"affected":[{"package":{"name":"golang-oras-oras-go","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/golang-oras-oras-go?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-oras-oras-go-dev","binary_version":"1.1.1-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50163.json"}},{"package":{"name":"golang-oras-oras-go","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/golang-oras-oras-go?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.0-1","2.6.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-oras-oras-go-dev","binary_version":"2.6.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50163.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}