{"schema_version":"1.7.5","id":"GHSA-mc8v-mgrf-8f4m","published":"2021-11-18T16:13:08Z","modified":"2026-07-08T06:30:00.754362064Z","aliases":["CVE-2021-41190"],"summary":"Clarify Content-Type handling","details":"### Impact\nIn the OCI Distribution Specification version 1.0.0 and prior, the Content-Type header alone was used to determine the type of document during push and pull operations. Documents that contain both “manifests” and “layers” fields could be interpreted as either a manifest or an index in the absence of an accompanying Content-Type header. If a Content-Type header changed between two pulls of the same digest, a client may interpret the resulting content differently.\n\n### Patches\nThe OCI Distribution Specification will be updated to require that a `mediaType` value present in a manifest or index match the Content-Type header used during the push and pull operations.\n\n### Workarounds\nClients pulling from a registry may distrust the Content-Type header and reject an ambiguous document that contains both “manifests” and “layers” fields or “manifests” and “config” fields.\n\n### References\nhttps://github.com/opencontainers/image-spec/security/advisories/GHSA-77vh-xpmg-72qh\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in https://github.com/opencontainers/distribution-spec/\n* Email us at security@opencontainers.org\n","affected":[{"package":{"name":"github.com/opencontainers/distribution-spec","ecosystem":"Go","purl":"pkg:golang/github.com/opencontainers/distribution-spec"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.0.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/11/GHSA-mc8v-mgrf-8f4m/GHSA-mc8v-mgrf-8f4m.json"}}],"references":[{"type":"WEB","url":"https://github.com/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41190"},{"type":"WEB","url":"https://github.com/opencontainers/distribution-spec/commit/ac28cac0557bcd3084714ab09f9f2356fe504923"},{"type":"PACKAGE","url":"https://github.com/opencontainers/distribution-spec"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TUZNDAH2B26VPBK342UC3BHZNLBUXGX"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4334HT7AZPLWNYHW4ARU6JBUF3VZJPZN"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A2RRFNTMFYKOTRKD37F5ANMCIO3GGJML"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DX63GRWFEI5RVMYV6XLMCG4OHPWZML27"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RZTO6N55WHKHIZI4IMLY2QFBPMVTAERM"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SQBCYJUIM5GVCMFUPRWKRZNXMMI5EFA4"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4OJ764CKKCWCVONHD4YXTGR7HZ7LRUV"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YIGVQWOA5XXCQXEOOKZX4CDAGLBDRPRX"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2021/11/19/10"}],"database_specific":{"cwe_ids":["CWE-843"],"github_reviewed":true,"github_reviewed_at":"2021-11-17T23:13:37Z","nvd_published_at":"2021-11-17T20:15:00Z","severity":"LOW"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N"}]}