{"id":"GHSA-77vh-xpmg-72qh","title":"Clarify `mediaType` handling","summary":"Clarify `mediaType` handling","severity":"low","cvss":3,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N","vendor":"opencontainers","product":"github.com/opencontainers/image-spec","ecosystem":"go","affected":["github.com/opencontainers/image-spec < 1.0.2"],"patched":["github.com/opencontainers/image-spec 1.0.2"],"published":"2021-11-18","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:49:09.703536006Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-77vh-xpmg-72qh","references":[{"url":"https://github.com/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m"},{"url":"https://github.com/opencontainers/image-spec/security/advisories/GHSA-77vh-xpmg-72qh"},{"url":"https://github.com/opencontainers/image-spec/commit/693428a734f5bab1a84bd2f990d92ef1111cd60c"},{"url":"https://github.com/opencontainers/image-spec"},{"url":"https://github.com/opencontainers/image-spec/releases/tag/v1.0.2"}],"tags":["osv","go"],"ingestedAt":"2026-09-12T03:13:01.763Z","slug":"GHSA-77vh-xpmg-72qh","body":"## Overview\n\n### Impact\nIn the OCI Image Specification version 1.0.1 and prior, manifest and index documents are not self-describing and documents with a single digest could be interpreted as either a manifest or an index.\n\n### Patches\nThe Image Specification will be updated to recommend that both manifest and index documents contain a `mediaType` field to identify the type of document.\nRelease [v1.0.2](https://github.com/opencontainers/image-spec/releases/tag/v1.0.2) includes these updates.\n\n### Workarounds\nSoftware attempting to deserialize an ambiguous document may reject the document if it contains both “manifests” and “layers” fields or “manifests” and “config” fields.\n\n### References\nhttps://github.com/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in https://github.com/opencontainers/image-spec\n* Email us at [security@opencontainers.org](mailto:security@opencontainers.org)\n* https://github.com/opencontainers/image-spec/commits/v1.0.2\n\n\n## Affected packages\n\n- `github.com/opencontainers/image-spec < 1.0.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/opencontainers/image-spec 1.0.2`","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":16.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}