{"api_version":"1","generated_at":"2026-07-17T22:48:12+00:00","cve":"CVE-2026-50163","urls":{"html":"https://cve.report/CVE-2026-50163","api":"https://cve.report/api/cve/CVE-2026-50163.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-50163","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-50163"},"summary":{"title":"oras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction","description":"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\", \"<extract_base>/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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-07-17 20:17:23","updated_at":"2026-07-17 20:17:23"},"problem_types":["CWE-22","CWE-59","CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","CWE-59 CWE-59: Improper Link Resolution Before File Access ('Link Following')"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451","name":"https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/oras-project/oras-go/releases/tag/v2.6.2","name":"https://github.com/oras-project/oras-go/releases/tag/v2.6.2","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp","name":"https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/oras-project/oras-go/pull/1232","name":"https://github.com/oras-project/oras-go/pull/1232","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-50163","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50163","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"oras-project","product":"oras-go","version":"affected < 2.6.2","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"oras-go","vendor":"oras-project","versions":[{"status":"affected","version":"< 2.6.2"}]}],"descriptions":[{"lang":"en","value":"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\", \"<extract_base>/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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-59","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-17T19:36:01.254Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp"},{"name":"https://github.com/oras-project/oras-go/pull/1232","tags":["x_refsource_MISC"],"url":"https://github.com/oras-project/oras-go/pull/1232"},{"name":"https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451","tags":["x_refsource_MISC"],"url":"https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451"},{"name":"https://github.com/oras-project/oras-go/releases/tag/v2.6.2","tags":["x_refsource_MISC"],"url":"https://github.com/oras-project/oras-go/releases/tag/v2.6.2"}],"source":{"advisory":"GHSA-fxhp-mv3v-67qp","discovery":"UNKNOWN"},"title":"oras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-50163","datePublished":"2026-07-17T19:36:01.254Z","dateReserved":"2026-06-03T20:54:20.432Z","dateUpdated":"2026-07-17T19:36:01.254Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-17 20:17:23","lastModifiedDate":"2026-07-17 20:17:23","problem_types":["CWE-22","CWE-59","CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","CWE-59 CWE-59: Improper Link Resolution Before File Access ('Link Following')"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":4.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"50163","Ordinal":"1","Title":"oras-go: Hardlink entry with relative Linkname escapes extract d","CVE":"CVE-2026-50163","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"50163","Ordinal":"1","NoteData":"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\", \"<extract_base>/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.","Type":"Description","Title":"oras-go: Hardlink entry with relative Linkname escapes extract d"}]}}}